Hyun-seon, who was bitten by a large dog as a child, used to be afraid of the massive Hee-do because he triggered that past trauma. However, as chance would have it, they end up studying together after school.
Contrary to Hyun-seon's prejudice that Hee-do would have a scary personality to match his looks, Hyun-seon is surprised to find him incredibly shy and bashful as he asks, 'I didn't understand that very well... c-could you say it one more time?'
Furthermore, seeing Hee-do unable to even eat properly due to bullying from the seniors in the judo club, Hyun-seon begins to look after him. Hee-do, who had always been alone...