Please take a look at the nonsense work "Winter Detective Agency" formerly known as "Winter Elegy"
Brief introduction to the mysterious client incident in the first case:
The Winter Detective Agency, which has been out of business since its opening, received an anonymous letter signed JYB.
The other party asked them to re-investigate the case last week where a thief committed suicide in fear of committing a crime because of theft and rape.
After accepting the commission, after step-by-step investigation,
The three members of the Winter Detective Agency discovered that the thief did not commit suicide out of fear of crime, but was murdered.
And through clues, it was found that the murderer turned out to be...
Intention: