People who became friends through different ways formed a detective team to fight a story called xc
"Private Detective Agency"
Why do you still have detectives here? Where are the mosaics in today's reasoning? Is this a serious detective agency?
In the first case, an internet celebrity died mysteriously during a live broadcast, suspected to have been committed by a fan?
In the second case, the school sweetheart tried to express his love for the school beauty, but failed and broke into the female dormitory to commit murder?
The third case·……
(This book has no female protagonist, and it is not a double male protagonist in the orthodox sense. There is no plot that forcibly lowers the IQ of the supporting character, unless the supporting character is originally a fool)