Introduced as the new guy at the konbini

Kinda awkward and lacking confidence in himself but still a good guy.

Mayu shows a shred of human decency and falls for her because of course he does.

During a shift, Hide finds out via idle chit chat that she likes someone but doubts that they like her back, unfortunately misinterprets her "haha sorry why am I even telling you this??" as her opening up and confining in him and believes that he has a shot with her.

Later on Hide catches Mayu and Genos talking outside and thinks that's the guy she was talking about and is enraged """"on her behalf""", leading him spiralling into an obsessive, jealous rage because a conceited, aloof pretty boy like Demon Cyborg has stolen Mayu's heart and treats it like GARBAGE.

These distorted feelings cause him to monsterfy...

(I'm still in progress with the monster design but I want something of a similar vibe to Berserk's Slug Count and No Face from Spirited Away)

The following day, Mayu arrives late to open the konbini due to having her bike dropped off for maintenance only to find the store already open but the lights are out with no one inside. She walks through to the back to find a strew of ripped clothing and a large dark figure looming over it.

It speaks to her.

"Sen....pai...."

Mayu makes a break for it back onto shop floor and the Monster stalks behind and we have a tense Velociraptor Kitchen scene in the konbini

Mayu eventually lures it to get a hit and a chance to run out of the store and a chase ensues.

Genos comes to her aid and fights but only makes things worse by being there. Mayu doesn't want Genos to open fire because she doesn't want him to hurt what might remain of Hide and pleads desperately for Genos to help her talk him out of it.

Failing to calm him down and blinded by rage from the sight of her being beside Genos, Hide grows into a frenzy, attacks and manages to turn Genos into a mangled mess.

Mayu is left to watch Genos be crushed under the monster's foot and desperately begs him to stop. Hide turns to her and berates her for being delusional enough to fall for someone who doesn't love her back and an idiot to allow herself to be treated like dirt by "people like him" and lectures on about how he knows what's best for her and is clearly the better candidate due to his superior love and newfound strength. The same ol nice guy song and dance...

Mayu claps back saying that what he feels isn't love, but obsession and this isn't how you win people over. Her anger then turns to sadness as she begs him to stop and eventually, her words break through and Hide shrinks down but doesn't revert back completely and musters an apology to her.

Not knowing how to change Hide back, Mayu begins to worry but Hide takes his new form in stride and sees it as a hopeful reminder to never be like that ever again.

He thanks Mayu and calls her a good friend and they part ways.

Bonus ending: