Shichigatsu Nana Nichi (Gentosha RuTiLe Bunko)

[Machine Translation] Gyoto Sakuma and Nagata happened to be next to each other when they took the university entrance exam, and became best friends after entering the university. After that, Sakuma and Nagareta have a physical relationship. Sakuma is attracted to Nagareta, who inherited a fortune while still in school and is a bit removed from the world, from the day they met, but Sakuma eventually decides to marry Nagareta. Nagareta, on the other hand, is determined to live with her feelings for Sakuma for the rest of her life, even if he marries her. The two continue to see each other even after their marriage...

佐久間行人は流田達と大学受験で偶然隣り合わせになり、入学後親友となった。その後、佐久間と流田は身体の関係を持つ。在学中に遺産を相続し浮世離れしている流田に、出会った日から惹かれながらもやがて結婚を選ぶ佐久間。一方流田は佐久間が結婚しても、一生彼への想いを抱え生きて行こうと思っている。結婚後も逢瀬を重ねる二人は…。