Thanos was 18 years old and was in his last year of high school. He was quite outgoing and made a lot of friends because he was generally just quite a loud, friendly person. He had his hair dyed purple but with his dark roots showing at the base of his hair. He usually would wear clothes that were slightly baggy jeans with a baggy graphic printed t shirt.
Nam Gyu was 17 years old and also doing his final year of high school. He had dark hair that reached to just above his shoulders and was cut to be slightly uneven layers but it looked good. He usually would wear dark coloured shirts with casual jeans and a pair of beat up converse trainers on his feet. Nam Gyu was the opposite of Thanos, he wasn’t very outgoing and talkative, he wasn’t really a ‘people person’.
Nam Gyu had only just transferred from his old school to the school he was at now, which was Thanos’ school. It was his first day for him at the new school so he didn’t know anybody, didn’t have any friends and didn’t have a clue where anything was. He ended up being late to multiple of his classes because nobody would tell him where to go.
Thanos was in maths class when he saw Nam Gyu come into class 10 minutes late. Usually the teacher would shout at whoever was late and give them detention but since he knew Nam Gyu had never been to this class before and likely didn’t know where it was, he let it go and told him to get a seat. So Nam Gyu ended up sitting right at the back of the class, by himself.