Kou is an adult man of average weight and somewhat above average height. He has medium short dark blue hair with a side bang on the right side of his face. The side bang also has a lighter purple wisp. His eyes are blue. He wears a dark turquoise yukata, beige Japanese sandals and white tabi. He wears a silver ring on his right hand.
Kou has a calm personality, but takes interest in paranormal activities and gets excited about them. He cares about Naho, not wanting her to go to Heavenly Host Elementary School, as well as other people who might get trapped inside the cursed school, writing the instructions on how to get out of it.
Satoshi Mochida finds the first part of a report written by Kou titled Strange But True: Stories of the Occult, which contains his discovery about Heavenly Host Elementary School's past, in the staff room.
Satoshi and Naomi Nakashima find the second part of Strange But True: Stories of the Occult by Kou in the Custodian's Closet.
Satoshi and Naomi watched a footage recorded in the tape on the TV in the Custodian's Closet recorded by Shougo Taguchi, Kou's assistant. After arriving to Heavenly Host, Kou is amazed by the surroundings and tells Shougo to film every detail, hoping to get public recognition he deserves. His amazement does not last long, because soon, the duo finds many dead bodies, making them realize how dangerous the place is. Kou decides to leave and is about to explain the way out to Shougo, but the latter hears children's voices and runs, tripping on, presumably, a corpse, leaving only the camera, with its tape being almost full.
After Satoshi and Naomi reunite with Yuka Mochida, they go back to the Custodian's Closet to watch the second tape that's mysteriously in Yuka's possession. On the tape that Kou films inside the Custodian's Closet, he explains the way to escape the school - performing Sachiko Ever After charm correctly and putting all your scraps together. He wishes that he had never done the charm, while banging sounds are heard in the background. The banging continues, and a possessed Naho calls for Kou. Finally, she busts the door open and enters the room. She kills Kou by strangling him to death, and the footage ends. Naomi, Satoshi and Yuka find Kou's corpse, along with Naho's, in the closet in the same room.
Corpse Party: Book of Shadows
Episode #4; 『Purgatory』
Naho, Shougo and Sayaka Ooue visit Kou's house. They hang around for a small while, before Kou says it is getting late and Sayaka leaves. The next day Naho and Sayaka go to school, but Naho leaves a note telling Kou to wait for her to get home before doing the Sachiko Ever After charm, due to the power of the spirits and Naho's powers with them. Kou writes a note saying that he and Shougo will go alone, for it is far too dangerous to endanger her. He then performs the charm with Shougo, and is sent to Heavenly Host.
Corpse Party: Blood Drive
CHAPTER 02 『 Respective Desires 』
Kou's corpse is shown in one of Shougo's tapes, found by Aiko Niwa and Haruyuki Inumaru. Shougo walks into the custodians closet, and after searching for awhile, finds the dead bodies of Kou and Naho. Shougo runs away in horror.
- Kou and Ryosuke Katayama share the same voice actor.
- Kou meets Satoshi in the Corpse Party: Blood Covered manga but not in the games, only his work is the only help given to escape Heavenly Host.