Alright, so I finished all the story branches from the FMA mobile Valentine's event, and I've compiled a summary/translation. Now let me preface with this: I do not know Japanese. I can read katakana, hiragana, and a handful of kanji, and I know basic sentence structure. So 99% of this is from Google Translate, and it may not be 100% accurate. It is long. I included some screenshots. With that being said, the summary is under the cut.
Chapter 1
It seems to be a dream sequence. There's this novel called Two Phantom Thieves that has become a sensation across Amestris, and everyone, including Roy Mustang, is reading it. He falls asleep while doing paperwork and imagines himself and Hawkeye as the titular thieves. It seems they have a rivalry, always hunting the same treasure. On their latest heist, they are caught in a trap set by Detective Hughes (with Havoc and Breda on his squad), and instead of fighting for the treasure, they have to work together to escape.
After escaping, Phantom Thief M (Roy) asks Phantom Thief H (Riza) to look at the moon with him and chat for awhile. She expresses her gratitude that their combined effort allowed her to escape. Roy says something along the lines of "We work well together. If we joined up, we could steal any treasure in the world." Riza is not keen on the idea. Apparently, she steals for the poor, while Roy steals for the wealth and fame. He says he has higher goals than wealth and fame and wants to change things from the top. Riza is surprised at the idealism and asks if he really thinks he can do it. He says he would tell her all about it, but the police are coming. Riza remarks that he seems different than usual, but regardless, next time the treasure is hers. She leaves and Roy has a moment where he reflects on her true identity and decides to have some fun with it.
The next scene shows that the Phantom Thieves have day jobs as reporters for the very same newspaper (return of glasses!Riza here). Their boss wants them to cover an event featuring the Eternal Chocolate Heart, but the viewing is only open to couples. Their assignment is to pose as lovers in order to write an article about the treasure. There is also something about alchemical research being revealed at the party and a competition for the alchemists to win the heart or something like that. Set up for the fighting portion of the event. It’s said that whoever touches the heart will be blessed with eternal love. Roy thinks to himself that this will be his next treasure hunt as Phantom Thief M.
Chapter 2
Reporters Mustang and Hawkeye arrive at the party, which is being hosted by Alex and Catherine at the Armstrong mansion. Hawkeye is holding Mustang’s arm stiffly, going over the type of information that they need for their article. Mustang says something like, “I know we’re just acting, but if you don’t seem a little more natural, they’ll find out we’re not a couple.” She ignores that and continues observing the situation.
Detectives Havoc and Breda are there, chatting with Catherine. Detective Hughes is also present with Gracia and Elycia. Hughes wants to get the Eternal Chocolate Heart for his daughter.
Armstrong gathers everyone and reveals the Eternal Chocolate Heart on a small table in the middle of the room, explaining that it has been imbued with alchemy. It’s divided into 4 pieces, and he says whoever eats one will be granted some kind of power, which works best when shared between two people. For that reason, they’ll be giving it as a prize to one of the couples tonight.
On the table, Armstrong is shocked to find that there are two envelopes: a pink one with the letter H and a blue one with the letter M. Notices from the Phantom Thieves. Armstrong then announces that if the thieves are here, stealing isn’t necessary. He invites them to join the competition as well. Mustang thinks to himself that it may be better to just do it fair and square.
Then the chocolate at the center of the table… disappears? Idk this part is a little unclear. Regardless, it was a decoy. The real chocolate is hidden in a labyrinth under the mansion. The winner will be whichever couple successfully recovers the chocolate.
Riza pretends to be dizzy, presumably so she can get away from Mustang and transform into the Phantom Thief. Roy also dons his disguise during this time.
In the fight sequence, the Phantom Thieves have appeared again, and Detective Hughes and his squad are all over the place. They agree to join up again and manage to lose them.
Chapter 3
Another couple at the party, Bard and Emma, have progressed a little further and are in the gardens, but there’s a puzzle they can’t solve. They hide and try to let someone else figure out the mechanism instead.
Roy shows up and notices Riza has escaped to the same place as him. Annoyed, she says she was just about to stop him with her bullet. Roy flirts and says something like “I wish I had the time to celebrate our reunion.” Riza says she’s got some information to share: they’ll have to solve the mystery together to progress, but “We’re only working together for now! The chocolate is still mine.” Roy notes that the chocolate is in four pieces, and they could just share it. But Riza says that only half of the chocolate isn’t worth as much, and she needs to help as many poor people as she can. Roy agrees, and the matter is dropped as they solve the puzzles.
They notice Bard and Emma are following them. The story branches slightly here depending on player choice:
3A: Pursue Emma and Bard
This leads to a small fight sequence. Emma wants to get the treasure before the Phantom Thieves to ridicule them. After they run away, Riza looks pensive. Roy asks what’s bothering her. She says, “Nothing, I was just wondering if I could use them to get one up on you somehow.” Roy says “Well I’ll just continue to keep my guard up…”
3B: Ignore Them
Nothing really happens during this option. They get through the puzzle and Riza makes some remark about getting the treasure before Roy.
The different paths lead to slightly different versions of chapter 4.
Chapter 4-1 (Choose option 3A)
Mustang and Hawkeye are getting closer to the center of the labyrinth. They seem to be the first ones to get this far. Bard and Emma come up on them again. Mustang asks if Hawkeye is going to launch a surprise attack on him after helping her solve the mystery (?? I think. This could be directed at Bard and Emma). She says “I’ll watch your back. You focus on solving the puzzle.”
Roy goes through the puzzle (following a rabbit through the right flowers). Bard and Emma followed again. Now Bard wants to fight, but they are overwhelmed by the Phantom Thieves' synergy. Bard decides to fight another time and runs.
Chapter 4-2 (Choose option 3B)
Bard and Emma have reached this point of the labyrinth before Roy and Riza. They are apparently not very good at puzzles and are lost again. They decide to hide again and let someone else figure it out. Roy and Riza arrive on the scene and chase the rabbit together this time. They arrive at the center of the labyrinth and note that it is eerily quiet and that it shouldn’t have been this easy.
Bard and Emma launch a surprise attack. Roy says, “They seem to be quite skilled. Can I trust you with my back?” Riza says “It’s an honor to have your trust. Let’s win this.” Bard and Emma are overwhelmed by their synergy and run to fight another time.
In either path, the chapter ends by cutting to Detective Hughes with his family. They hear the fighting, so Hughes goes ahead of them to secure the path. He wants to catch the Phantom Thieves and get the chocolate for Elycia.
Chapter 5
Ngl this bit was a little confusing, so idk how accurate this is.
Hughes, Havoc, and Breda are blocking the next section. As they try to get through, Mustang tells Hawkeye that their only goal is the chocolate, so she should go on ahead. It seems the fight can’t be avoided, so they fight together. Roy remarks that it would do the detectives better to just solve the puzzles rather than try to chase them. Riza points out that Hughes’s family seems to have disappeared. The traps in this next section have tiles that make you teleport to another location.
They agree to truce and work together here. Roy doesn’t like the idea of a small child being all alone.
Chapter 6
Gracia and Elycia were teleported just outside the labyrinth.
Cut to the group inside. The puzzle has a bunch of tiles that all need to be activated. They have to work together. Hughes wishes his family were here to solve it with him. He hears Elycia encourage him from outside the maze somehow??? Riza remarks that she’s just happy his family is safe.
Now that the tiles have been activated, all that’s left are for the 6 remaining tiles to be stepped on at the same time. However, they only have 5 people present. Emma comes out from hiding, saying Bard left because he was sick of losing. Now they have 6. They step on the tiles, and some creatures come out, guarding the chocolate heart that appears in the middle. They all have to fight to reach the treasure.
The ending is determined by which character you let grab the heart.
6-A: Riza gets the heart
Phantom Thief H reaches the heart first, announcing her victory, but Phantom Thief M pulls some trick and manages to snatch it. He says it’s not over yet. They can still catch him as he escapes from the labyrinth.
6-B: Roy gets the heart
Roy says, “The treasure is mine, Phantom Thief H. With this, I can reach the top.” He starts posturing, announcing to everyone that he got the heart. He says it’s not over yet. They can still catch him as he escapes from the labyrinth.
6-C: Any other character gets the heart
Exactly the same as 6-A, but replace Phantom Thief H with Hughes, Havoc, Breda, or Emma.
On a high balcony, Alex and Catherine are watching. Catherine says it’s finally her turn.
The story’s final ending is determined by your choice in this chapter.
Chapter 7
Roy is running away, noting that the party started at night, but it’s already dawn. As he is escaping, he falls into Bard’s trap, where he was waiting for the winner. He releases poison gas, disabling Roy. The fight sequence is against multiple Hugheses, caused by Roy’s confusion from the poisoning.
Riza runs onto the scene and says she can’t let her partner lose to such cowardly tricks and helps him. Roy asks why she doesn’t just take the chocolate and run. She says she doesn’t want to win with dirty tactics and wants to beat him fair and square.
Catherine appears and determines that the bond between them is real (???) and leads them to the exit. Alex declares the Phantom Thieves as the winners as they emerge, but Roy is still affected by the poison, being supported by Riza. He mentions that the chocolate has the power of healing as well.
Riza lays Roy across her lap on a bench as she feeds him the chocolate.
Havoc, Breda, and Hughes wonder what they were fighting for to begin with or something and says they all worked together to solve the mystery.
Catherine and Alex talk about their intention with the chocolate. Apparently it was designed to make people work together, which is why she held the tournament.
Meanwhile, the chocolate seems to have worked. Mustang says “I feel a lot better. Thank you for your help, Phantom Thief H… or should I say, my colleague, Ms. Hawkeye?” Hawkeye grits her teeth but doesn’t say anything. He asks again if she will be his partner. He says if they work together, they can change the world. “After challenging the labyrinth with you and being rescued so many times, I’m convinced.” Hawkeye still doesn’t give an answer. He says not to rush. She can give him the answer soon.
Cut to Catherine and Alex again. She says the effects of the chocolate are maximized between two people with a particularly strong bond, which was proven by the Phantom Thieves. Alex says something like, “Too bad it only lasts 15 minutes…” lol. Hughes snaps out of it and shouts, “What the hell am I doing?!”
Back in reality, Mustang is woken up at his desk by Lieutenant Hawkeye. She says he must have been dreaming, since he was stirring and making noise in his sleep.
Roy tells her about the dream he had.
Chapter 7-1 (Choose option 6-A)
He says, at the end of the dream, they were able to escape from their pursuers after a fierce battle. It cuts back to the dream sequence.
Phantom Thief M and Phantom Thief H are overlooking the grounds where the chocolate was. Mustang remarks that the chocolate makes people want to join hands together. He says he wants to give Hawkeye the rest of the chocolate. She is a bit skeptical. He says it’s so that he can “join hands with her” and he asks for her to be his partner again. She says that they were only allies temporarily for the competition, and their rivalry stands. She says instead of relying on chocolate to steal her heart, he should try stealing it with his own hands. Roy says he seems to have decided his next target.
Cut back to the real world. (biiiiig question mark about all of this:) Hawkeye remarks that she can’t believe he gave away all the chocolate in the end, but that sounds like him after all. Roy says that his rival was one step ahead a few times (?????), and a woman’s heart is deeper than the sea. Hawkeye says, “Even so, I’m intrigued by the novel that inspired that dream. I might find time to read it.”
Chapter 7-2 (Choose option 6-B)
He says, at the end of the dream, they were able to escape from their pursuers after a fierce battle. It cuts back to the dream sequence.
Phantom Thief M gives Phantom Thief H part of the chocolate. She asks why he would give her some when he was the one who won. He says, “If it’s mine, then half is yours, since you’re my partner.” She says she never gave him an answer. He replies, “But you’re here now. Can I still expect to see you by the beautiful moon?” (not 100% on that translation either) They hold hands in the moonlight.
Cut back to the real world. Hawkeye says that they have to continue to work hard to reach their goal, and she will continue to watch Mustang’s back. “Even so, I’m intrigued by the novel that inspired that dream. I might find time to read it.”
Chapter 7-3 (Choose option 6-C)
He says, at the end of the dream, Hawkeye escaped under the cover of heavy rain, but he was caught by Detective Hughes, who was chasing him. It cuts back to the dream sequence.
Mustang is being apprehended by Hughes while Hawkeye looks on from atop a tall building. She says that even though he may be a perfect phantom thief, his only weakness is water. All this heavy rain was just bad luck. She then says, “It’s sad that there’s no one left to compete with, but I’ll make your dreams come true some day.”
Cut back to the real world. Hawkeye says, “Even in your dreams, you’re useless on rainy days. What a shame.” Mustang says, “Don’t look at me with such pity, Lieutenant…” Hawkeye then says, “Even so, I’m intrigued by the novel that inspired that dream. I might find time to read it.”
END
