Yu Suisui's life is tied to Han Ci.
System: If he is happy, your health value will be higher. If he committed suicide, you wouldn't survive.
So Yu Suisui became Han Ci's follower. When Han Ci was bullied,
Yu Suisui: Brother, I'll scold you back, you have to stay happy.
Han Ci: Got it, I have a crush on my brother, right?
Purpose: Love life