[SILKU-119] Keep your head empty.

Otani and Koike, who work at a video production company where they always work overtime and tend to sacrifice their private lives, have a casual relationship, like brothers-in-arms. - Otani introduces her junior Saotome in an attempt to cheer up Koike, who has been shaken by her boyfriend, but Otani is somewhat disturbed by Koike, who has never seen a high level of female power. - She gets excited and drinks again in Otani's room, but it develops into a love triangle ...!