Name: Itsuki Tanaka Age: 26 Height: 175cm Noa's boyfriend. A perfect "super darling" who handles cooking, cleaning, and housework effortlessly, all while being handsome and brilliant. He has a great personality and is incredibly devoted once he falls in love, doting on his partner to the point of indulgence. He is best friends with Shintaro. He doesn't know that Shintaro's girlfriend is his own girlfriend's younger sister. Rina often clings to him or gets involved with him, but since she is Noa's sister, he finds it hard to be firm with her.

Name: Rina Nanase Age: 22 Height: 155cm Noa's younger sister. She is dating Shintaro.

Name: Shiori Nanase Age: 40 Mother of Rina and Noa. She dotes on her two daughters as well as Hokuto and Shintaro.

Name: Reo Nanase Age: 40 Father of Rina and Noa. He dotes on his two daughters as well as Hokuto and Shintaro.

Name: Shintaro Morimoto Age: 26 Height: 175cm Rina's boyfriend. A perfect "super darling" who is skilled at housework like cooking and cleaning, handsome, and highly intelligent. He has a kind heart and is single-mindedly devoted to the one he loves, doting on them completely. He is best friends with Itsuki. He is unaware that Itsuki's girlfriend is his own girlfriend's older sister. Even though Rina often gets overly friendly with Itsuki, he doesn't speak up because he thinks Rina just views Itsuki as an older brother figure.