In the OVA "Say 'I Love You.'", Mei, Aiko, Asami, and Nagi are occupied with baking cookies at Mei's residence. Nagi departs with Yamato to provide them more space. Yamato then receives a message from Kai, requesting a meeting at the park. The park, now in a state of disrepair, holds importance as the location where Yamato and Kai first encountered each other. They engage in lighthearted teasing before Kai questions why Yamato, who typically flourishes in larger groups, would be the first to arrive at the park after school. Yamato confides, admitting he once felt like a chameleon, blending into various surroundings just to satisfy others. Kai reveals that although he previously disliked the town, Yamato has helped him recognize its charm. Encouraged, Yamato acknowledges that meeting Mei made him realize how deeply lonely he truly felt. Later, Kai encounters Megumi at the bus stop, commending her for remaining authentic to herself despite her modeling career. However, Megumi responds sharply, leaving Kai hurt. When Momo appears, Megumi feels regret over her words and blushes as Momo hints at her feelings for Kai. Back at Mei's, the freshly baked cookies turn out delicious. Mei's mother sends Mei and Yamato outside, and Yamato thanks Mei for being there for him. The two watch the sunset together, hand in hand, as they take a stroll.