About
Ryuuichirou Isaka (井坂 龍一郎)
Birthday: January 28
Age: 32
He is the executive Director of Akihiko's publisher, and the childhood friend of Haruhiko (Usami's brother).
Ryuuichirou Isaka (井坂 龍一郎)
Birthday: January 28
Age: 32
He is the executive Director of Akihiko's publisher, and the childhood friend of Haruhiko (Usami's brother).
