Miniamaru Kareshi

Miniamaru Kareshi manga summary: Iroha Aoyagi is a normal 16 year old girl, except, she's never fallen in love. She suspects there might be something wrong with her; until she meets her classmate Kusakabe-kun who seems well-versed and cynical about matters of love. Will Iroha be able to handle someone like Kusakabe-kun?