Shōichi Kamita is a second-year high school student who is worried about university exams and his future. In this point in his life, he comes into contact with various girls, and the story follows Shōichi and his relationships with them.

Seiren (セイレン) is an original Japanese romantic comedy anime television series directed by Tomoki Kobayashi at Studio Gokumi and AXsiZ. It premiered on TBS on January 5, 2017.