Let's Kiss in Secret Tomorrow Vol. 3 (Kodansha, 2020)

Saya and Yuto were best friends before they decided to start dating at the end of junior high. They thought they'd be glued at the hip for the next three years in high school… Until Yuto shows up at the entrance ceremony with a brand-new look, and Saya makes a rash decision when the other girls start getting nosy… That's when Amabiki-san, the one person who knows Saya and Yuto's secret, steps in. But her motives aren't entirely altruistic… As Saya and Yuto gradually mature into different people, can their relationship survive? Find out in the thrilling conclusion to this secret love story!