Her older sister, Hikaru, is quiet and shy. Her younger sister Luna is cheerful, bitchy, and outgoing. Even though they are twins, their personalities are so different. Hikaru's crush is Kouki, a popular influencer. Runa is sex friends with Kouki! I want to be held by Kouki-kun! Hikaru masturbates in a lonely fantasy. For some reason, her older sister Hikaru decided to pretend to be her younger sister. Kouki Hanasu