Standing at 5’10, Lin looks fairly lean for his height. His usual attire outside of his school uniform is just a pair of high-top sneakers, a dark pair of jeans, and a black polo shirt. His hair is long and slightly unkempt, having a natural wave to it, but not violating the school regulations. On his right wrist he wears an orange sweat band with a black stripe through the middle, and on his left wrist he wears his cellphone model digital duel disc. His bag he brings for school is a messenger bag.

Kind and friendly, but teasingly mean, Lin manages to get along with people without much issue. As for deep friendships, he's childhood friends with Koumori, whom he calls Kou-chan or Nyasident, and he considers himself good friends with the rest of the Student Council, especially Kokoa who joins him in teasing Koumori usually constantly.

He tends to be on the protective side to the others in the Student Council if it comes to it, though usually Akayama tends to take center stage during such moments. While he doesn't have a girlfriend right now, nor a large interest in dating, he has to admit that he wouldn't mind dating any of the girls on the Student Council. Not that he'd ever admit that to their faces.

Lin is of mixed descent, with a Chinese grandparent whom he is named after. For the most part, he had a normal childhood. Go to school, play in the park and get dirty after school till the sun set, take a bath, eat dinner, sleep, repeat. Usually, said playing usually involved his childhood friend and next door neighbor, Koumori Karasu. They were stuck together throughout most of their lives, usually ending up in the same class.

They both ended up developing an interest in Duel monsters like most kids their age, and to varying degrees, they both stuck with it. Lin enjoyed the idea of playing with a type of card called 'Rank-Up-Magic' due to the nature of it changing a monster into a stronger form, while Koumori got attached to the deck 'lunalights'. She never told him why, but he suspects its because she thinks the monsters are adorable.

In middle school, he was asked to help out with a casual friend's club recruitment, and discovered that he liked doing promotional work, and realized he had a knack for it. Granted, his friend got in trouble due to the way Lin went about promoting the club, but it was still a success.

During his first year of high school, he handled the advertisement and marketing for his classes Culture festival booth, and managed to get their class to second place in terms of sales, only narrowly losing first place by a few yen. He is also directly responsible for handling Koumori's presidential campaign for Student council president, which to the 3rd years, earned her the nickname of 'nyasident', along with 'Purresident' and 'Meowsident'.