Chitose Is in the Ramune Bottle, Vol. 6 (manga)

-Leave him. Now.-Saku Chitose and his fake girlfriend, Yuzuki Nanase, know they-re playing with fire by trying to smoke out a potential stalker-but when creepy photos are delivered to Yuzuki-s house along with a threatening note, things start to look serious. And as if that wasn-t bad enough, Yuzuki-s basketball shoes go missing right before a game! It-s now up to Saku to solve the case-though perhaps he-s missing a few too many puzzle pieces-