San is in the group Ateez which includes Hongjoong Yunho Mingi Jongho Yeosang Seonghwa and the youngest Wooyoung. Wooyoung and him are in a relationship and San always looks after Wooyoung because he knows Wooyoung is very bad mental condition. Wooyoung saw his parents die with his own eyes. Wooyoung takes antidepressants, has several phobias and is afraid of everything. San always protects him. When they have time, San takes Wooyoung on dates and spoils him a lot. Wooyoung is an introvert. The rest of the group is protective of him just like San