Nekota no Koto ga Kininatte Shikatanai.

Transferring often, Mikiko "Mikki" Amane maintains an aloof and detached attitude at each new school. However, she is thrown for a loop when she sets eyes on her classmate Nekota. He has the face of a cat! No matter what angle it's viewed from, or how hard it's tugged on, his head looks like a mascot. To make matters worse, Mikki seems to be the only one who finds this strange.

With her interest piqued, Mikki unravels the mystery behind the cat-faced Nekota, and why only she sees him this way. There is no better way to get close and investigate than to befriend him. For once, the usually indifferent transfer student might just have to make some friends!

[Written by MAL Rewrite]

Included one-shots:
Volume 2: Retake!
Volume 3: Kumori Sora, Ue no Hou.
Volume 9: Chounouryoku Shoujo Clane
Volume 10: Hoshikuzu yori Ai wo Komete