KC: Yu Jin

 

+  Motivated/Hardworking | Protective | Confident/Prideful | Intelligent

=  Calm | Carefree | Absent-minded

-   Reserved | Cold | Short-tempered 

+
Motivated/Hardworking: He's dedicated, motivated and very serious about his work. When he's on the job, he likes to focus on the job and only on the job.
Protective: When he started living in Japan, he started to try understanding others more and became slightly more open to people. After people have gained his trust, he unconsciously becomes protective/or possessive of those he cares about.
Confident/Prideful: He's always showing his confidence, feeling or believing that he can do something well or succeeds at something. He shows pride to his success and can often act high and arrogant, even giving a slight feeling of him being superior.

Intelligent: Since Jin had one of the best scores in schools, it shows that he has good understanding and a high mental capacity. He's one of the best students in college right now, thanks to his hard work in previous schools.

=
Calm: Most of the time, he's calm and keeps his cool in most situations. Jin isn't a person who would instantly panic in a bad situation.
Carefree: Jin often acts like having no worries or problems, he's relaxed, mostly when not working.
Absent-minded: Sometimes, if a thing or a person isn't interesting to him, his level of attention lowers and he tends to zone out. Or sometimes he gives intense attention to one single object of focus that makes him oblivious to events around him.

-
Reserved: He's a total opposite of a loudmouth or a cut-up, the wolf can be polite, and has a lot of self-control. He often doesn't show all of his feelings as he rather keeps them to himself.
Cold: Jin can be a bit distant and wont show a lot of his emotions around other, even thought he might be feeling happy, excited, sad..., etc., inside. He may even be rude or honest/blunt without him even knowing that. He probably doesn't mean it most of the time.

Short-tempered: Due to him having a bad temper, if you do anything that he dislikes or hates, he'll show you his bad side. He will act ignorant or angry towards you.