As the heirs of large companies, the fathers of Minatozaki Sana and Hirai Momo had arranged to marry their daughters to merge their wealth. 

Son Chaeli was a spoiled rich girl who fell for the blue-collar local boxer Kim Jongin

A summer storm caused another driver to collide with Ryujin & her girlfriend Yeji, putting them both in the hospital. 

Lisa didn't realize she would literally run into her old crush Sehun when she moved into university. 

Ga Eul gets caught staring at her crush Yi Jung in math class and has a heart attack when he unexpectedly reciprocates her feelings. 

Tiffany sobs alone as the test reveals two pink lines and she has no way of contacting the pretty girl from the one-night stand weeks ago. 

When quiet freshman Jahyun notices tall and handsome Oh Sehun participating in a shady activity on her college campus, she pretends not to see, but can't help but to notice the rapid beating of her heart when his gaze goes her way. 

Rose is too scared to go on a walk at night alone so Lisa decides to hold her hand the entire way.