Título: Domestic na Kanojo
Otros títulos: Domestic Girlfriend / Dome X Kano.
Autor: Sasuga, Kei (Historia y dibujo)
Género: Drama, Romance, Escolar, Shounen
Fecha de Publicación: 2014
Capítulos: Finalizado (276.2)
Editora: Shounen Magazine (Weekly)
Hilo del anime: https://www.mediavida.com/foro/anime-manga/domestic-na-kanojo-624314
Natsuo es un chico de preparatoria que está perdidamente enamorado de su alegre y popular maestra llamada Hina. Sin embargo, un día en una reunión conoce a una chica malhumorada llamada Rui y termina durmiendo con ella. Poco después, el padre de Natsuo le dice que se casará de nuevo con una mujer que tiene 2 hijas, para sorpresa de Natsuo las hijas resultan ser Hina y Rui.
Natsuo Fujii is in love with his teacher, Hina. Attempting to forget his feelings towards her, Natsuo goes to a mixer with his classmates where he meets an odd girl named Rui Tachibana. In a strange turn of events, Rui asks Natsuo to sneak out with her and do her a favor. To his surprise, their destination is Rui's house—and her request is for him to have sex with her. There's no love behind the act; she just wants to learn from the experience. Thinking that it might help him forget about Hina, Natsuo hesitantly agrees.
After this unusual encounter Natsuo now faces a new problem. With his father remarrying, he ends up with a new pair of stepsisters; unfortunately, he knows these two girls all too well. He soon finds out his new siblings are none other than Hina and Rui! Now living with both the teacher he loves and the girl with whom he had his "first time," Natsuo finds himself in an unexpected love triangle as he climbs ever closer towards adulthood.