|Relatives||Rie Kaishō (daughter)|
|Occupation|| Chairman of JJ System|
Information analysis adviser
|Debut|| Episode 1|
Murder at the Ball
|Japanese voice||Shinichiro Miki|
Rinroku is a slim man with rather wide shoulders. He looks older than he actually is, due to his grey hair and classic glasses. He has flat eyes and a long face and nose. He dresses in casual clothes, a dark blue shirt with long sleeves and a beige sweater over it. He has light brown pants and shoes in the same color. He also has a necklace with some kind of silver jewel on it.
Murder at the BallEdit
Rinroku is first seen working on his computer in his bureau. Rie enters the room and Rinroku sees her via a monitor on his screen. He comments on the dress that it looks good on her.