Comprehensive: a New Identity is Superimposed Every Month

My name is Cheng Cheng, and my current name is Sun Xiangcheng.
That's right, I passed through and got the system.
A new identity is added every month!
Since then, my routine has become strange.
A ninja from Konoha sneaked into the house to find his grandfather, calling him a Konoha traitor.
My mother knew a best friend when she was young. It is said that she has two very cute daughters named Lala and Mengmeng.
The two little girls who played together when I was a child, Eltluqi and Evangelin, always liked to threaten me with their fangs.
The junior girl Kuroyukihime kept telling me "Red King, I'm sorry", and my tablemate Gui Yanye looked at me very strangely recently, and Miss Kaguya of the student council always suggested that I should confess to her.
But what worries me the most right now is whether to go to Academy City or Itogamijima for high school...