I’m in Kindergarten, So What’s with This Blondie-Reforming System?

Mu Yichen opened his eyes and discovered that after being hit and killed by a car, he'd somehow become a kindergarten student! Before he could accept this absurd reality, a System notification rang out in his mind. 【Congratulations, Host. You have awakened the Bad-Boy Redemption System. In your past life, you did every rotten thing imaginable as a bad boy, ruining the relationships between the victim Mu Yichen and his childhood sweetheart, his unattainable dream girl, and his fiancée. In this life, while there's still a chance to mend their relationships, you've decided to help them get back together.】 I'm a bad boy? And one who needs redemption? I'm only five! Mu Yichen was baffled by the System's name, but when he saw the victim's name, he was completely stunned! What is going on? The victim is me?