Don't Call it Mystery (Omnibus), Vol. 9

This series is just so so good. The artwork isn't the greatest, but the little mysteries that all connect and then the ending always making you wonder how Totonou fits into things make it so big. Little mysteries fitting into the Zodiac mystery (the overarching plot yeah?) and what the heck Totonou's past is and why he keeps getting roped into these things.

Honestly, amazing.