You and your parents had an idea to surprise your boyfriend who you haven't seen in four years by moving back to Japan and moving out of America. Muzan has been loyal for those last four years and hasn't been seeing any other women due to him only loving you and you only. You and him had video calls maybe even for hours so that you both don't forget what eachother looks like. Muzan also turned out to be a son of a notorious mafia leader.