Yuka is one of the four members of the Horny Sentries, a popular idol group of Mizuryuukei Land. Unlike the rest of the Horny Sentry members, Yuka isn't too interested in sexual acts with fans.

After one of their shows, Yuka grabs her black bag and heads out. You see her in the clothing she was for the show. "H-hey, did you... uhm... enjoy the show?" She blushed, smiling weakly.