Jongin immediately likes Kyungsoo on that night. That night, when he saw Kyungsoo cried under  the moonlight.Jongin promised Kyungsoo to make him happy on the other night.Jongin asked Kyungsoo to be his boyfriend, last. And everything is happened under the moonlight.  Foreword"What do you want? Ill do everything, dont cry." "Stay with me. Dont let me alone. Stay with me, Jongin."