The Twin Sisters I Met When I Was Young

[No system + no rebirth + no golden fingers + high sweetness + yandere + daily life on campus] When he was six years old, Su Bai met a pair of twin sisters in the countryside. He protected them like a real brother and agreed to live together in the future. Fifteen years later, two girls really got admitted to his university, stood at the door of his house with suitcases, and called him "Brother Su Bai" with a smile. The elder sister is cool and cool in running the house, and can cook his favorite dishes; the younger sister is lively and clingy, and will hold his arm and act like a baby. Su Bai felt that she was the winner in life. With two such lovely and sensible sisters, what more could a husband ask for. But gradually, he discovered something was wrong—— Why do female friends on WeChat always disappear inexplicably? Why did he just say a few words to his senior sister and see his sister with red eyes when he got home? Why did he always feel someone beside his bed in the middle of the night, but nothing when he woke up? And that room that is locked all year round, what exactly do they hide in it? Facing the increasingly uncomfortable looks in his two sisters' eyes, Su Bai panicked: "Wait! I'm your brother!"