Cat + Crazy manga volume 1 features story and art by Wataru Nadatani.

High schooler Kensuke Fuji adores cats, but others in his family are allergic, so he's never really been able to spend time with any. When he meets a mysteriously skilled cat guru—who seems to be able to understand everything about cats—Kensuke finds a kindred spirit who is also “absolutely kitty bonkers,” so he decides to study under this Ultimate Cat Whisperer! Come along with Kensuke and learn the secrets of the Cat Fist Way!