a person who is so lovable that you will only want to hug her and hold her for ever. be warned: yuchen is very addictive and you will never want to let her go
Yuchan is a very hot boy, awesome calfs and beautiful eyes and eyebrows. Nice booty. Super sexy hair. He can be egocentric and not admit when he is wrong. He is loyal to his beliefs.
Example 1: God, look that amazing calfs, he must be a Yuchan.
Example 2: He is so smart and sexy when he talks, I bet his name is Yuchan.