(18+) Mark has a habit of taking to his room once the house is asleep to unwind and enjoy his time alone. Upon getting a little too carried away with his fun time, the curious sounds drive Yuta to come check on him- interrupting him mid-play. [Based loosely off a family AU; Yuta is a fatherly figure to Mark, though they aren't father and son by blood, Mark does refer to him with fatherly terms🤙]All Rights Reserved