Ryuuichi Takeshima (竹島龍一) is a supporting character in Aoashi, voiced in Japanese by Kentarou Kumagai. The series' music includes "Ao Ashi - Opening 2 | 4K | 60FPS | Creditless |", "TVアニメ『アオアシ』ノンクレジットエンディングムービー ♪Rin音/「Blue Diary」".
