Strong's activites

So my main list of modern romance is full,, so I decided to create a separate list specifically for High Schoolers! For that more innocent love~  ╮(￣▽￣)╭

For the main list: https://www.mangago.me/home/mangalist/1332593/

Wait can someone refresh my memories cuz i forgot the plot regarding her mother ? What's her relationship with eunhyuk’s father? And who's the woman in the pictures with him?