En of Love: This Is Love Story (2020)

A love story about how the engineering faculty's resident playboy, Neua, secretly falls in love with Pra-Ram, a senior in high school and younger brother of Gun Tossakan (TOSSARA) — and how he wins the boy, and his brother over.
(Source: Soju at MyDramaList)

~~ Adapted from the novel "This is Love Story เหนือพระราม" by Faddist.