Echoes in the lecture hall

Main couple : William × Est (Student & Nephew × Professor & Step-Uncle)

To his warm, loving, and ultra-protective family, twenty-year-old William Jakrapatr is the sweet, chaotic youngest son who can do no wrong. Ready to finally leave his "baby" status behind, William steps onto his university campus eager for independence alongside his best friends, Santa and Fourth. But his dreams of a carefree college life are instantly shattered on day one when his cold, introverted, and brilliantly sharp twenty-seven-year-old step-uncle, Est, walks into the lecture hall-not as a family member, but as his notoriously strict professor.

In the classroom, Est treats William with an icy professionalism that leaves no room for familial favoritism, forcing a frustrated William and his chaotic brothers to plot sweet revenge. Yet, as harmless pranks turn into late-night detentions, the forced proximity begins to shift the air between them. Beneath the strict academic boundaries and family ties, a quiet, forbidden tension begins to brew.

As the echoes of their shared secrets fill the quiet lecture halls, William and Est must navigate a dangerous line where the roles of uncle and nephew, professor and student, blur into something entirely undeniable.