Backstage, Kimi no Iinari. Backstage, I'm Yours

Synopsis

Masataka, an audio technician, has known Kei since his amateur rock days and used to treat him to ramen. But, now that Kei has become a top-selling artist, their positions are reversed. One day, Masataka is assigned to help with Kei's upcoming performance, and after the show he's invited to the after-party. Little did he realize it was an orgy! (Source: Renta!)