An Ke never thought that his sister would be so great
I didn't expect that the always great person would be so miserable.
To put it simply, it is a story about a boy who refuses to put down his arrogance and a free-spirited child.
Regarding the age of Atobe boy: The setting in the article is that the heroine is older than Atobe.
Order, the age of Atobe in Chapter 1 has been revised (anyway, it's okay to be under ten years old)
The general process is
Before junior high school→First grade (second grade)→Plot→High school and college→Society
The plot won't be too long before
Note: This article is not a time travel