Ryoko Kiryu

 was Yutaka Kanzaki attorney.

Appearance
Ryoko is a young attractive woman with medium-long black hair.

Plot
Ryoko called Shizuku Kanzaki after his father Yutaka Kanzaki died. When he came to Yutaka's house, she introduced herself and explained that Yutaka was sick, but asked his sickness to be hidden from his son until he dies. She handed him and Issei Toomine Yutaka's will, who asks them to guess which are his "Twelve Apostles" along with the very best wine in his collection, the so-called "Drops of God" and that one who does it within a year, will receive his wine collection worth 2 billion yen.

Ryoko then overseed Shizuku and Issei first test, if they can guess the wine chosen by Yutaka, they get the right to stay in his house. She also took participation in trying the wine, and made a guess, but Issei corrected her, explaining her why she made the mistake to think it was a young wine. Hearing his explanation, she realized he was correct and his points made sense. As Shizuku had never drank wine, the wine reminded him of his past and he dropped the glass and left, giving the victory to Issei.