TOILET-BOUND HANAKO-KUN, VOL. 5

"Nene Yashiro serves as the assistant to the School Mystery Hanako-kun. Whenshe is invited by enigmatic playboy Natsuhiko to a mysterious tea party, shemeets Hanako-kun's ""girlfriend"" and his ""little brother""...!? On top of that,she learns that one of the Seven Mysteries is mixed in with her classmates..."