Why Have the Sisters Who Raised Me All Become Yanderes?

After Shi Yu's parents died in a car accident, Mu Yuxiao, the daughter of his father's comrade-in-arms, looked after him for a while.

But the good news is that Mu Yuxiao and both her roommates are top campus beauties.

One is a tsundere, sharp-tongued but soft-hearted CEO, and a piano prodigy. Another is a writer.

Years later, Shi Yu is nineteen, and they are twenty-five.

When Shi Yu opens the door, he sees all three older sisters looking at him.

"Sister, I'm home."

"How many times have I told you not to call me that?"

"Then what should I call you?"

"What do you think?"