When I Came Home After Graduation, I Found Out That My Mother Had A Bunch Of Younger Sisters

Su Heng was stunned. He went to college for seven years, and when he came home, he found that his parents had secretly given birth to a second child behind his back!

Moreover, there are four lovely younger sisters!

Su Heng, who has never raised a child, represents Alexander.

But fortunately, the pet sister crazy devil good brother system is online!

Pick up the younger sister and reward the perfect physique;

Telling stories to lull my sister to sleep, and rewarding artistic versatility;

Buy a skirt for my sister, and get double rebates...

Just when Su Heng was obsessed with being a sister-in-law and couldn't extricate himself, he realized that he was famous, and all the young ladies on the Internet wanted to be four cute sister-in-laws. What should I do...

(The introduction is weak, please read the text!)