Forgot manga title.

There is a blonde gyaru who actually just some make up when mc see her cleaning her face with water, mc see beautiful white skin. Some next chapter tell that the blonde gyaru actually mc grade school friend who always wear boy clothes. Mc didnot know that his friend in grade school actually a girl because some incident make the boy changed school.

Something like that happens around chapter 21 in Hoshino, Me o Tsubutte....

~4400 manga completed
~1700 ongoing...