三日月がわらってる

Sawajima, A Prefecture. A new teacher is assigned to this small island with a population of about 300. Her name is Saki Tsukino. And on the island, there is a boy Yukio, who has been skipping school because he is busy helping his family as a fisherman. The two could have had a common teacher-student relationship. If not for that shocking encounter. But the female teacher and the student gradually fall for each other... A love story of forbidden lust on a small island! (Source: Akita Shoten, translated)