BamBam returns home from a trip to Thailand and realizes he misses having Youngjae there to welcome him back. 

Youngjae thinks that Bambam is rude, hot-headed, and doesn't smile a lot since that's what he shows in front of him most of the time. Until the two of them become roommates..

Youngjae doesn't think comfort can lie within those who've been cushioned by it their whole lives, but then again he's been wrong about a lot of things- like the idea that people that love him and that people never change.