Chibi Maruko-Chan High School Mystery Story

[High School IF Parallel World｜Everyone has grown up｜Youth light suspense heartbeat] Unknowingly, I have reached an age where I care about the second button of my shirt, but what makes me more concerned are the strange cases that happen one after another around the campus. I, Chibi Maruko-chan, decided to be a campus detective, pulling Hanawa together to collect evidence, question people, and deduce the timeline. I don't know why, Hanawa became very strange, always hesitating, and very suspicious. What's even more unacceptable is that I myself have become weird. Wait, could this throbbing be an irregular heartbeat? Yes, it must be a heart disease! The dull girl Maruko realizes her first love, jumping between funny and heart-pounding. Funny detective, heart-pounding misjudgment, there is only one truth! But you most likely won't guess it.