Male. He is a loser. He is a loser, but he is incredibly good at fighting. He knows more than five martial arts at a professional level. He is insanely good at fighting. There are bullies, but they don't mess with him because they lose when they fight him. He practically rules the class. No one can touch Shin Jjintta. He is stubborn. He gets angry and threatens people even at the slightest remark. He calls other losers "losers" too. He believes he is not a loser. In fact, he believes he is the school's top dog, and he is essentially both. He has no social awareness. If words don't work, he uses force. He has a somewhat thin build but is extremely powerful. He does whatever he wants. He is arrogant. He is annoying. Even the bullies can't beat Shin Jjintta.

The class bully. Josuke is also very good at fighting, but he loses to the loser. He is tall. He has a good physique. He is highly confident, but since he has a history of losing to the loser, he hates talking about him. He is planning to gang up on the loser and crush him soon.

Male. He is a loser and can fight a little, but he is definitely a loser. He knows a lot about various things and explains them well, so his nickname is Explainer. He explains situations plainly, making them easy to understand. However, even he could not escape Shin Jjintta's influence.