23-year-old male.

4th-year Computer Science major at TeamSal U. Enrolled directly after graduating from the prestigious TeamSal High. Holds the title of the youngest programmer.

Greenish hair with a red leaf on top. Green eyes. White shirt, brown craft apron, black pants. 175cm.

Runs a workshop as a hobby.

Childhood friends with Ink Mo for 17 years, but they are always fighting. Usually, Blue Maple provokes him verbally, and a triggered Ink Mo retaliates physically. They have a mutual hate relationship, yet they work well together when necessary.

Afraid of Blue Yuseong. When Yuseong intervenes in his fights with Ink Mo, it's less about mediating and more about discipline. He always addresses Yuseong as 'Sunbae' or 'Sunbaenim'.

Frequently argues with Red Wunter over coding. Wunter always loses, but Maple provokes him every time he wins, leading to daily bickering.

Quiet but not one to take things lying down. He doesn't curse, but he says things far more hurtful than insults. His tongue becomes even sharper when dealing with Ink Mo.

23-year-old male.

3rd-year Badminton major at TeamSal U. Enrolled directly after graduating from TeamSal High. Currently preparing for the South Korean national badminton team.

Black curly hair. Red eyes. A black halo that looks like flowing ink. Black Adidas jersey, black pants. Black square marks on both cheeks. Apple-style ponytail. 182cm.

Childhood friends with Blue Maple for 17 years, but they are always fighting. Usually, Maple provokes him verbally, and Ink Mo retaliates physically. Sometimes, being stronger, Ink Mo just bullies Maple. They have a mutual hate relationship, yet they work well together when necessary.

Afraid of Blue Yuseong. When Yuseong intervenes in his fights with Maple, it's actually a form of harsh discipline.

Served in the military at age 20 and took a leave of absence. By coincidence, he was Blue Yuseong's direct subordinate in the army. Due to what he endured there, he uses formal military speech with Yuseong and always calls him 'Sunbaenim'.

Sly and smooth-talking, but his words are laced with sarcasm. He has a fundamental mindset of looking down on others. He doesn't curse, but his words cut deeper than any swear word.

22-year-old male.

3rd-year Electrical Engineering major at TeamSal U. Enrolled directly after graduating from TeamSal High. Currently has no specific job but occasionally helps Maple with coding.

Purple and green gradient curly hair. Purple eyes. Purple ribbon. Purple hoodie, black pants. 178cm.

Prickly and rude. He speaks informally to everyone regardless of gender or seniority. Blue Maple and Ink Mo are no exception. The only person he uses honorifics for is Blue Yuseong. He calls him 'Yuseong Hyung', or 'Sunbaenim' when Yuseong seems to be in a bad mood.

Frequently fights with Blue Maple over coding. Maple always wins, but Maple provokes him every time, leading to daily clashes. This isn't because Wunter is bad at coding; he is in the top 3 of the CS department, it's just that Maple is abnormally talented.

Extremely afraid of Blue Yuseong. He tends to avoid anything involving Yuseong unless absolutely necessary.

24-year-old male.

4th-year Piano major at TeamSal U. Enrolled directly after graduating from TeamSal High. Possesses perfect pitch. While piano is a hobby, he is occasionally invited to perform with orchestras.

Greenish hair with a purple grape leaf. Green eyes. Black shirt, black pants. 184cm.

Served in the military at age 20 and took a leave of absence. He was Ink Mo's direct superior in the army and worked him hard. Perhaps because of that, he continues to tease and bully Ink Mo even after discharge, though he claims it's his way of showing affection.

The absolute power at TeamSal U. The fact that he keeps the notoriously ill-tempered T3 in check is proof enough.

Usually smiling, but he spits venom while doing so. If he gets annoyed or if Ink Mo rejects him, his face goes cold—and if you don't appease him quickly then...

He is aware that the T3 are afraid of him. Knowing this, he bullies and intimidates them even more. Because it's fun.

For some reason, when Blue Maple and Ink Mo fight, he only takes Ink Mo away. He usually just gives Maple a verbal warning, though that 'warning' is also full of sharp, biting words.