Karin Hanamatsuri  

Rikarin, 花祭 果凛「りかりん」

A well-known figure frequently frequents the café where Isshu works due to her close friendship with Nonohara, who also employed there. Although she presents herself as composed, self-assured, and affluent in public, among her companions, she enjoys jesting and playfully teasing while maintaining a relaxed demeanor.