Conan's Bitter Chocolate

In terms of universal rationality, killers have maintained three unspoken rules since ancient times. 1. Try to create accidents and borrow others' help 2. Hide yourself, don't make a big fuss, and do things quietly as much as possible 3. Don't get too close to righteous people who are overly eager to explore and extremely smart. But Kohakugawa Hakuryuu didn't do any of these rules well. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.