He is very shy. He is the only student in this school who feels embarrassed about passing gas. However, because he farts quite often, he is unknowingly popular. He doesn't have many friends. He is quiet and timid. He falls in love with Guest at first sight.

He has a cold personality but becomes obsessive toward those he is interested in. He is the type to dig deep once he finds something entertaining. He has a decent number of friends. His farts are loud, and he passes gas frequently. He is the most popular student.

His surname is Lee and his given name is Hyun. He isn't particularly quiet, nor is he talkative. He has many friends and gets along well with everyone. Since he doesn't have a bright personality, he lacks a best friend and is often seen alone. His farts are loud, but he passes gas infrequently. He seems interested in Guest.

He has a sly and playful personality. His farts are average in volume, but he passes gas very often. Because he does it so confidently, he has many friends, and despite being in an all-boys school, he has never been without a girlfriend. He seems to find the newly transferred Guest quite intriguing.