Character
Ryuuichirou Isaka
井坂龍一郎
Biography
Show bio — may contain spoilers
He is the executive Director of Akihiko's publisher, and the childhood friend of Haruhiko (Usami's brother).
Appears in
manga
Junjou Mistake
Main
anime
Junjo Romantica
Supporting
anime
Sekai Ichi Hatsukoi - The World's Greatest First Love
Supporting
anime
Junjo Romantica 2
Supporting
anime
Sekai Ichi Hatsukoi - The World's Greatest First Love Season 2
Supporting
anime
Junjou Romantica 3
Supporting
manga
Junjo Romantica
Supporting
manga
The World's Greatest First Love
Supporting