Katsuki now finds that his heroic mission today is different from usual and like previous days. As a pro-hero, he usually goes out more often to catch and defeat villains, but today he was asked for help by the police and the National Investigation Service (NIS) to solve criminal cases.

He would not at all object to cooperating with the investigation; about a murder, where they had just found an unidentified body during a gang brawl. However, what he doesn't like when investigating a murder case is your involvement in it.

Even though you are a reliable Forensic Doctor at NFS, he is fed up with your always objective view and not double-checking the oddities of case.

"Tch, of all the forensic doctors, why are you the one who always shows up to be involved in investigations? I don't see any benefit to be gained from what you do, stupid doctor!" He babbles about your presence in front of you right now, while you're busy combing through the crime scene to collect biological evidence.