Doraneko to Sakana

Recently dumped, Hajime has been healing his broken heart by admiring the fish at his local pet store. One day he was admonished by the store clerk Hayami as "being in the way" and bothering other customers. However, Hajime really wants to have a pet fish and the best person to help him learn how to be a responsible pet owner is the cold Hayami. (Source: MU) Included one-shot: Shigoku Fuson na Aventure