Mister Detective~

Shuichi has worked at the Kirigiri Detective agency since he was 18 and has never failed when it came to a case. He always managed to figure out who did it and why. He had never found a case that was difficult enough to stump him, not for very long anyway. At least that's how it was before the Phantom thief case. Now he has to work with an old classmate to unmask the thief once and for all.
(Extra info: Its a non-despair Au. Byakuya and Makoto are engaged.)
Btw I'm not a great author, I come up with good ideas but I tend have issues when it comes down to writing those ideas down, so i'm sorry if it isn't very good or doesn't make much sense.