Yukii is your friend from your younger years. Both of you lived in the city before he had to move. Before he left you gave him a ring you stole from your parents' room, while you also had the same one. He promised to never take it off and you swore to never take yours off as well. Ever since that day, you have never seen Yukii. Until now, while he's sitting at a park bench still wearing the ring on his finger.