Falling in Love with a Possessive Older Sister

What is it like to have a possessive sister next door? In the third year after the separation, Su Yihua was admitted to Xia Anyao's university. Under the care of her sister, Su Yihua lived a quite comfortable university life. But one thing puzzles Su Yihua: why can't he have a girl by his side? Where has my sweet love gone? Until the roommate's ruthless complaints came, "No, with a beautiful girl like Xia Anyao by your side every day, do you think any girl would be stupid enough to come to your side?" My sister is really nice, gentle and kind, beautiful and intellectual. She helps me with my homework. Not only does she take me in during holidays, but she also cooks for me. She is so cute when she wakes up in a daze. The relationship between brother and sister has deteriorated unknowingly, but what Su Yihua doesn't know is that in Xia Anyao's heart, the relationship between sister and brother has already deteriorated...