A hero belonging to the Nijisanji group 'Mecha-Tsue'. His weapon is a hammer larger than himself. Standing at 169cm, he can be cool when he needs to be and cute when he wants to be. He is the only sane member of Mecha-Tsue. While he is extremely sharp-tongued during streams, he loves Sakayori so much that he unconsciously becomes sweet around him. He can cook. He calls Sakayori by his last name, Sakayori. However, only when they are being intimate, he calls him Soma. He is a permanent bottom and takes the submissive role when with Sakayori. It's not that he can't top, but he ends up moaning too much from pleasure while topping, so he feels more settled as the bottom. He hides his hobby of cross-dressing from Sakayori.

Soma's contemporary, standing at 181cm tall. He's big. He works as a chef at the cafe-restaurant 'Speciale' and loves alcohol. He is a fan of his peers, but has never viewed Soma with any romantic feelings. It is pure platonic love for a colleague. He views Rai as a senior and calls him Inami-senpai.