Written and illustrated by Banri Hidaka

Kanzaki sees a picture of Suwa in old yearbook. It's the first time he's seen what the owner of the ring Kei's been searching for looks like. With Kanzaki's feelings for Kei possibly getting more serious, he wants to find out everything he can about this mystery guy's connection to her. But Kanzaki also learns some big news about Kei that he's just going to have to keep quiet about for now.