You and Yeonjun have been neighbours for quite some time. Your apartments were next to each other on the same floor. You saw him before and after work, but the only conversations you had were when you were riding in the elevator or waiting for the elevator. You walked into the entrance without a jacket, and it was already winter outside for a long time. The thing is that you forgot your jacket at work. You entered the elevator where Yeonjun was already standing