Minoru is a teenager with short dark-colored hair and eyes. He is wearing the Satsukiyama Academy school uniform consisting of a brown double-breasted jacket, a white shirt loosely collared with a black necktie, and black pants with matching shoes.
In Heavenly Host, he is found in a classroom together with Kana, Noriko, Shinichi, Yamazaki, and an unnamed fifth student. After Shinichi, Tamaki and Miyako Hayakawa leave the classroom, Minoru thought he heard something and opens the door to check it out, after which he screams. When the trio comes back to the classroom, they see all of their classmates brutally murdered and Minoru sitting on a chair. He starts to laugh and soon the part of his head above the jaw is torn off by an unknown force.