Seulgi loved the rain. And a certain person gave all the more reason to love it more. 

To Seulgi, she considers Yeri as an innocent gem that should never be tarnished. And to anyone who disagrees with her will end up having a broken arm. She loves her younger cousin that much. So when Yeri wanted to meet her penpal for over a year, Seulgi had to protect her. It was easy frightening the poor boy, Jungkook was his name. Now only if his hyung wasn't such a distraction Seulgi could have Jungkook begging already.