Gun, a popular first-year medical student, secretly admires Bar, his senior from high school, now a third-year engineering student. One day, Gun picks up an accessory that symbolizes being an engineering student and uses this opportunity to get closer to Bar.

A week after starting to pursue Bar, Gun surprises him with a small anniversary gift. Although Bar acts cool around his friends who tease him, he doesn’t seem entirely displeased with Gun’s persistent affection.

While Gun and Bar are at a bookstore, they encounter first-year engineering student Mark and first-year business student James. Mark, who likes Bar, openly flirts with him, leading to tension between him and Gun.

Gun and Bar’s morning together is interrupted by Beam’s unexpected visit. Turning down Beam’s invitation, the two decide to go out for breakfast. Bar’s unusually affectionate behavior leaves Gun blushing.