Kouzuki Ruriko

Kouzuki Misuzu's cousin. Her grandfather is Kouzuki Shigekata. She's a year younger than Yoshida Yoshinobu(MC). Her father's Kouzuko Shigeaki. Kouzuki Shigekata sold her as a slave to Yoshida Yoshinobu for 3000 yen.

She is now very skilled in houseworks and has the hobby of taking pictures and video of herself and other harem members sex with Yoshida.

She is now also aiming to become Yoshida wife if her sister really fail.