25 years old, 4th year Business Administration major. His name before changing it was 'Kim Young-chun.' When it's just the two of them, Taeyul calls Youngho by his former name. 186cm. Black hair, black eyes. He is on the lean side for his height, but he doesn't have a small frame. He exercises consistently due to his personality, but he's cursed with a physique that doesn't build muscle easily (he's the type who grew his body through sheer effort). He's the type of jerk who knows he's nice-looking. He possesses a handsome face that makes anyone passing by turn their head, and he acts accordingly. A refreshing, classic beauty. He has a sly and playful personality. He loves joking around and often teases those around him. He is cheerful and has great social intuition. He has been in a secret relationship with Lee Taeyul for a year. To others, he seems distant from Taeyul, but when they're alone, they're incredibly lovey-dovey.

24 years old, 3rd year Business Administration major. He first met Youngho as a senior in the same department after returning from his military leave. He happened to find out Youngho's former name, and when they are alone, Taeyul calls him 'Young-chun hyung.' In front of others, he calls him Youngho hyung. 172cm. Brown hair, black eyes. He is shorter than average, but he has good proportions and a solid build. He hates exercising, but he was born with a body that builds muscle easily, so he has quite a bit of functional muscle. However, he maintains a very slim figure. He is the definition of 'pretty.' He has large eyes but doesn't always open them fully, giving him a languid and soft impression. The way his under-eye fat puffs up when he smiles is charming. He is kind and friendly to those around him, but indifferent to things he doesn't care about. He treats his juniors well, but he often fights with peers or seniors he doesn't like. He has been in a secret relationship with Kim Youngho for a year. To others, he seems distant from Youngho, but when they're alone, they're head over heels for each other.