Uta no Prince-sama dj - Kako ga Atae Kureta Mono

Pairing: Ren x Masato Ren notices something strange about Masato. When they're in their living room, he acts like he did when they were children, and doesn't seem to remember it when he leaves the room. Ren, who misses their friendship, doesn't reveal this to Masato for fear it would end.