#daidan

Kai willingly walking into water, something he had a deep fear of, as an act of suicide

Ignoring those trying to save him

He's blocking them out. He doesn't even care.

Kai tries to introduce his friends to the dragon he trauma-bonded with and he immediately hits every stage of internal panic because he realized he has absolutely no clue what her name is. He's just been calling her the Guardian Dragon in his head and immediately shoved everything from the Land of Monsters out of his mind as soon as he saw Lloyd. He's going through every hoop possible to avoid addressing Daidan by her name. He says "oh yeah this is the Guardian Dragon that helped me out" and immediately changes the conversation in the hopes everyone just assumes her title is like the Matriarch dragons. He could also ask Daidan for her name later. He won't. Because that's embarrassing as hell.

She doesn't tell anyone her name. They just keep calling her the dragon and are like hey, Kai, does she actually have a name? And Kai changes the subject because he can't just say no, if he's wrong then he looks like a liar. And everyone will ask questions and he's not about to share his traumatic experiences with anyone ever until he dies. He's having an entire crisis, Daidan just keeps him in this game because it's funny.

She does give in eventually. It's literally 5 minutes before she leaves. She says something like "if you ever need my assistance, simply ask for Daidan" and Kai, who has just gone through multiple days of mental torment, shouts at the top of his lungs; "THAT'S YOUR NAME?????", only for everyone to immediately whirl their heads around to stare at him.

From Kai's sword being encased in fire while he is trying to get home

To how it's that same fire that activates rusty

How he feels he is without purpose and needs Kai and Daidan's fire to keep going for most of his time on screen

How Kai uses his fire mostly to protect himself while Daidan uses it to seek vengeance

How when Kai and Daidan have their hopes used against them by the water monster they are unable to use their fire

How when Rusty does finally find his purpose it's his own fire that saves the others

In Primal (the show Spear and Fang are from), the couple has to traverse a ruthless and unrelenting world that threatens to drag them down at every turn, filled with monstrous creatures ten times their size and strength. Sometimes they can fight, other times they have to run, as the creatures are too great in size and might to take on. It's a world that resembles the Land of Monsters in its crudeness, and with a very similar premise to what Kai and Daidan supposedly endure in between the last episode of Monstrosity and the beggining of Kai's Monstrous Journey.

Both duos also meet and establish their relationship through grief. Spear and Fang cooperate for the first time in order to avenge their families. After killing the monsters responsible, they are left with no one to care for and no purpose, alone in an unforgiving environment. From then on, they form an unlikely aliance; that even with some hiccups at first, grows into an unbreakable bond between the two fighters.

Daidan and Kai meet through sorrow as well, with Daidan channeling hers into pure rage and a desire for revenge. Kai stops her and makes her reconsider, which grants him the dragons' loyalty. After the encounter with the Squid Monster, and the sacrifice of another fellow survivor, they decide to travel together, trying to survive a world teeming with monsters without becoming one themselves.

In a world where everything is out to get them, these connections are what keep these characters not only alive, but living. They are the reason the other wakes up in the morning, and the reason for which they fight to stay alive and keep themselves in check. They give eachother purpose in an otherwise futile existence.

Also these duos are both composed of stoic, strong man and giant, strong scary lizard, which I find funny.