Chapter Text
Tsukasa as a succubus type mother goddess who lives on sexual energy
(All first years are the same age, second years are two years older, and Tsukasa is four years older)
He was originally a normal orphan who lived in the streets. He always took care of Saki and Toya first, but he also helped other kids organize into teams to protect themselves. He was effectively the leader of a network of vagrant orphans.
When Tsukasa was 14, Saki and other young girls get kidnapped to be ritually sacrificed for a demon summoning. Tsukasa gave up his life to save them, only to be revived into this...thing from the over-saturation of demonic magic. Now, he grows weaker the longer he goes without "male essence". On the upside, though, he gained incredible power no mortal can possess while still maintaining part of his humanity due to his transformation resulting from an act of love. (Also he grows a pussy and a womb, but idk if he's see that as an upside lmao. Also WOMB TATTOO WITH A HEART THAT COLORS IN DEPENDING ON HOW MUCH CUM HE HAS IN HIM THANK YOU DELICIOSO)
Tsukasa always refused to feed because he couldn't do it with an adult stranger he didn't trust, but he also couldn't bring himself to feed on "his kiddos." The longer he went without feeding, the hungrier he got. The hungrier he got, the less control he had. He was so afraid of accidentally hurting them that he resigned himself to a life of constant starvation.
(The hunger can actually be alleviated by French kissing anyone, but he didn't know that. Everyone in this universe has "male energy" and "female energy", it's just a matter of how much. Most women, without magical interference, do not have nearly enough to satisfy his hunger. However, the amount being passed through with kissing is kind of like a rice cracker. Not filling, but it's still something)
The first time he "fed" was when Rui, who just turned 18, half-forced him to accept his seeds. He was the second oldest of the boys and the first to understand what kind of predicament Tsukasa found himself in. Tsukasa was shocked by Rui's proposal and tried to refuse. Rui, however, wasn't listening. He pleaded and made puppy eyes until Tsukasa agreed to just one round. Lmao yeah sure. We all know that the moment that dick slid into his pussy, Tsukasa's mind turned into mush and his magical slut side took over.
So uh... turns out Rui can fuck for almost two days before getting tired? Are you surprised? Tsukasa sure as hell was. By the end of it, Tsukasa was begging Rui to stop. His body had no problem taking it, and tbh he was enjoying it very much, which is the actual problem.
He always thought of himself as upstanding and proper, even after he turned into a succubus. He had to be a good example to everyone after all. Yet here he was, moaning like a whore on the dick of one of the kids he cared for. He was scared of what he had become, a question he didn't have to confront so directly until now. Rui reassured him that Tsukasa will always be Tsukasa to them all, that human or demon didn't really matter, that Tsukasa was forever lovable and beautiful. Tsukasa gradually calmed down and fell asleep in Rui's arm. After this, he became more open to the idea of being fed by his family, if they volunteer
In this verse, I'm envisioning wedding Rui being somewhat of a "Sebastian Black Butler" situation. Except he's a lot kinder, humane, and genuinely in love with Tsukasa. A yandere not in the sense of "you can only be mine", but a yandere in the sense of "I will rip apart every heretic who dares look at you the wrong way." Rui is visibly unhinged about Tsukasa. He also calls him nii-sama because I love younger tops calling their older bottom nii-san/gege/hyung. Sue me.
Toya views sex with Tsukasa both as an act of love and an act of worship. Due to Tsukasa's powers and kindness, he effectively became a living god in the minds of the children he took in. Toya is an extreme version of this. He worships the ground Tsukasa walks on. Sex with him is gentle but firm and a religious ritual. Also, Toya always looks like a gentle, reasonable person until he mentions Tsukasa. He is an absolute freak, he is insane, he is unwell about Tsukasa. Like Rui, he also calls Tsukasa nii-sama
Akito, who only joined the band when he was 13 after being forcefully separated from Ena, was pretty freaked out by the whole idea. He was raised normally with all the social norms surrounding sexuality. However, he also loved Tsukasa (and every other freaky member of this weird found family) too much to allow him to suffer. Basically, Akito is the only sane one around here. Ironically, his appropriate reaction to the general bizarreness makes him stand out negatively. To be Akito is suffering. He still fucks that demonic mother-brother-goddess pussy though. He calls Tsukasa by his name lmao
Later, the girls learned a spell to grow a dick when they need it because I have a carnal need to have Mafuyu fuck that boy in the pussy. Sometimes Mizuki would get off magical estrogen just long enough to feed Tsukasa lol
Also Mizuki makes his outfits. They're all really sexy and other members would bribe them to add in their favorite elements (often kinky shit). Tsukasa has long hair because I think we deserve long hair Tsukasa