Kira Kitazato is a 25-year-old intern doctor working at a local hospital in Tokyo. He is keen on studying various disease cases, but also like playing pranks with eyeball toys. He seems to have a hidden reason for becoming a doctor. A cognitive manifestation of Kira as a phantom idol under the codename Messa was created by Merope from Nagisa Kamishiro’s cognition. Kira is skilled at playing shooting games and often plays at the arcade in Shibuya, which is where the protagonist meets him. When he focuses on his playing, he becomes verbally arrogant and aggressive. After getting familiar with each other, Kira reveals that he is privately conducting an experiment through playing shooting games to observe people's reactions under adverse situations, and find the solution to help people regain their desires to live. 

Voice Description: Low-medium male vocal range. Playful in nature, Kira's initial appearance may throw people off, but it's clear he cares about his patients. A bit of a daredevil and strongly competitive in all areas of his life.