A Jewel Case in Midsummer

Nozomu, the Ichijō twins, the Hinagiku twins, and Keisuke are invited to the Sakuratsuki mansion. After fishing and a barbecue, the group decide to play hide and seek. As Nozomu is trying to find a hiding spot, Yura and Kira let him inside the locked room because he is a special person to them. They confess their love to him and allow him to tell them what he feels about them later.