Ep. 11: Kashiwada and Oota visit the beach with Oota's sister causing trouble
Aired on December 13, 2025

11
Kashiwada, Oota, and their friends travel to the beach for a day of leisure. During the outing, Oota's sister accompanies the group and actively works to create difficulties and disrupt the peaceful atmosphere. The narrative focuses on the interactions between the main characters as they navigate the challenges introduced by the sister's presence at the seaside location.
Episodes
- Ep. 7 · Kashiwada-san and Oota-kun share chocolate
- Ep. 8 · Kashiwada-san and Oota-kun and Lies
- Ep. 9 · Odajima-san Strikes / Kashiwada-san and Oota-kun's Tennis / Odajima-san's Interpreting
- Ep. 10 · Kashiwada Falls Ill After Rain, Leading to a Meeting Between Oota and Her Brother
- Ep. 11 · Kashiwada and Oota visit the beach with Oota's sister causing trouble
- Ep. 12 · Kashiwada and Oota catch bugs, visit the beach, and start the new school term