Maybe for someone, promises are just childish actions and preferred to just laugh it out as a joke. It's just a thing that we should not take seriously in order for us to not get hurt.
But for Yohan, he really took it to his heart.
Yohan and Leonard made a promise back when they were just kids. It was a promise made by their innocence and curiousity. Little did Leonard know, his bestfriend fell inlove with him the same day they made the childish promise.
Ten years later, Leonard looks like he forgot about the promise and the only persom holding onto it was Yohan. Will Yohan be able to keep holding on? Or will he finally give up the promise that that has been made from a decade ago that was sealed with a kiss?