Bakemonogatari (Manga) Vol 04

One day, high-school student Koyomi Araragi catches a girl named Hitagi Senjougahara when she trips. But - much to his surprise - she doesn't weigh anything. At all. She says an encounter with a so-called "crab" took away all her weight...

Vertical Comics
(W) Nisioisin (A) Oh Great