Keppeki Shounen Kanzen Soubi

Sata Senda is a hardcore germophobe who takes compulsive cleaning to beyond socially awkward levels. A childhood experience at an amusement left him forever haunted and his future classmates forever weirded out. Seta is befriended by a classmate named Anna Aiuchi and they become close over the duration of a school trip. It isn't to last though as Aiuchi suddenly moves away overseas. Now one friend down, Seta soon enough finds himself surrounded by a group of sudden acquaintances including a persistent wannabe-girlfriend, a shy-guy bunny lover and a hyperactive raincoat lover. Now he needs to learn to juggle helping friends with keeping himself immaculate in the process.

Included one-shot:
Volume 1: Haken Gakusei