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