Jeonghan comes out of the closet, with layered long hair and gay overload, Wonwoo's family falls apart and his parents divorce, his brother runs away from home in a gypsy van, and he ends up working at the second best/worst place after a tattoo parlour, meaning the shop in the basement selling incense and body piercings to red faced bikers. All this happens in one summer. 

Then comes Mingyu.

Mingyu makes everything simple. As if they were still seventeen.