@dotawolfbrother
I appreciate the work! I saw one mistake, at page 41. "In the support of an the" An should not be there, as it is just a repeat of the next line's an. But with how much text there is here, I don't blame you for missing this!
I almost thought this would be Detective Conan with a harem brocon focus, but wow, this guy is actually pretty brilliant. Yamada's deductive skills don't feel forced at all. And while he was thinking of how to help Tsukishi out, he realized that something was very off with his accident. So yeah, there's definitely a very intriguing mystery behind this. Which of these mentally unbalanced sisters could have killed him?
Is he ever going to get back to his old detective agency and meet his coworkers? That would be interesting.