Is It Reasonable That Someone in the First Grade of Elementary School Is Invincible?

I, Han Han, male, am 7 years old this year, and am in the first grade of elementary school. The aunts nearby all say that I am cute. Ever since I traveled through time, there was a system in place, and then, I became inexplicably invincible. But why is there always a strange person who always disturbs my elementary school life? Don't come over here, I still have to go to elementary school! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.