Najima Keiji

Mukojima Takuro is a lonely teenager who spends his time fishing at the pier and, to his incredible surprise, fishes up Muromi, a mermaid. Muromi first off doesn’t realize she's a mermaid until she meets Takuro. Not only that, she is incredibly dense and crazy and has a drinking problem to top it off. Now every time Takuro goes fishing, Muromi appears and makes life interesting for him.

Anthology from various doujin artists about Nagatoro and Senpai keeping to the theme of Nagatoro teasing Senpai and sometimes it backfiring on her.