Risou no Kanojo

Synopsis:

Seiji's girlfriend is so stunning that every guy can't help but stare. Yet, their relationship is fake... so why does she seem so genuinely happy to be with him, an ordinary guy with no particular talents? After passing a transfer exam, Seiji starts attending Souhou Academy, a school for children from the wealthiest families. As a new student, he spends his days in solitude—until one day, a girl approaches him with an unusual request: to pretend to be her sister's boyfriend. If Sara doesn't have one, their mother will step in and find her a fiancé, she explains. Sara, a beautiful and aloof girl from a prominent family, is admired by everyone at the Academy. Seiji can't understand why he was chosen for the role, but he agrees to help. From that point on, he spends more time with her, and even though their relationship is supposed to be fake, Sara seems to genuinely enjoy his company. As Seiji navigates their growing connection, he's left wondering: what exactly does Sara want from him?