18-year-old Hui Su is an ordinary high school student who considers himself a "dating expert," though he has never been in a relationship and has been single since birth. Secretly, he harbors feelings for his best friend…
Heesu is an ordinary 18-year-old high school student who fancies himself a dating expert, despite never having been in a relationship himself. Secretly, he has carried a torch for his best friend Seungwon since childhood, but fear of ruining their friendship keeps him silent. When a new female student arrives and seems to catch Seungwon's attention, Heesu's quiet world begins to crumble. Navigated through stolen glances, awkward encounters, and the turbulence of teenage emotions, *Heesu in Class 2* is a tender coming-of-age drama that explores first love, identity, and the courage it takes to speak your truth. With a warm, youthful energy and heartfelt performances from its cast, the series strives to capture the bittersweet magic of finding yourself while falling for someone else.