Ep. 1: Natsuo meets Rui on a date, then discovers his teacher and her become his stepsisters.
Aired on January 12, 2019
High school student Natsuo harbors romantic feelings for his teacher, Hina. To distract himself, he attends a group date with friends, where he encounters a quiet girl named Rui Tachibana. Both disinterested in the event, they leave together. At her home, Rui asks Natsuo to have sex with her, despite lacking romantic interest. Later, Natsuo’s widower father announces his intention to remarry. Natsuo discovers that his new stepsisters are Hina and Rui. The family moves into a new house following the marriage. As everyone prepares for bed, Natsuo attempts to kiss a sleeping Hina but is interrupted by Rui.
Episodes
- Ep. 1 · Natsuo meets Rui on a date, then discovers his teacher and her become his stepsisters.
- Ep. 2 · Natsuo and Rui Pretend to Be Strangers While Hina Cries on the Roof
- Ep. 3 · Natsuo's emotional turmoil regarding Hina's relationship leads to a confusing kiss.
- Ep. 4 · Natsuo and Rui stalk Hina to find her boyfriend, leading to a failed plan and a breakup.
- Ep. 5 · Rui befriends a notorious individual who harbors an uncomfortable attraction to Natsuo.