Inspired from the manga  L-DK and the live action also, the story revolves about Kai, “Prince” of the school who is known to turn down girls who confessed to him. Krystal being the nobody in the school happened to have Jinri that was been turned down by the school “Prince”.

What will happen if a simple fire incident on their unit turns out to be the way for them to be close to each other? Will their friends know they are living together or will they keep it as a secret till Kai's unit was fixed?