Soulmate AU where when you write something on your skin with a pen, marker, etc. whatever the hell you want, it will show up on your soulmate's skin as well.

'I live next to a bar and one day find you drunk and kicking my trash can. You calmly explain that, "It reminds me of my Ex. He's a piece of trash too" I knew then we were soulmates' AU

"We're staying in conjoining rooms at a hotel, which is fine, but it turns out that the lock on my side is broken so your kid keeps coming in here to show me pictures of dinosaurs. You keep apologizing but honestly, I like dinosaurs so this might work out after all," AU. 

In which Chae Hyungwon is a teenage boy who knows nothing when it comes to choosing between his two dates. He asks for some help from Kihyun and the latter gladly accepts.