Dean started to flirting with San until he became his boyfriend. Dean often went to sleepover at San's house without letting San'd mother aware that they were dating each other. At school, things started to crumble because Dean was flirted by juniors and San was flirted by sèniors, both male and female students. Their secret relationship began to be awarded by people around them, no matter how hard they try to hide. What solutions does Dean and Sun have to look at to make their love life better without hurting each other?