[Aidon Raiki (Tsukeshiru)] I'm a boy, but I'm going to become a tentacle's bride [Full Color]

Curious schoolboy Nagiori-kun follows his senpai into a so-called 'Rare Creatures Club' hidden in the old school building, only to find his initiation means being pinned down by a circle of grinning seniors and fitted with a living bra whose wriggling tentacles latch onto his bare chest. From there his body betrays him completely—his chest swells, his belly rounds heavy with tentacle offspring until he looks ready to give birth in the hallway, and every feeding leaves his cock smaller, his figure softer, his skirt bulging with the hungry parasite that refuses to let him go. By the time he's waddling to class in a schoolgirl's blouse and pleated skirt, moaning that this is his life now, the club's newest bride has stopped resisting what he's becoming.