Encirclement Love

Ryou had a sleepover and saw his friends – Issei and Tadahiro – kissing while they thought he was asleep. He asks them about it and feels betrayed as a childhood friend when they pretend nothing happened.
Determined to catch them red-handed, Ryou ends up inside a closet with Issei’s little brother – Yuusei -, who has a unexpected reaction to the situation.