At Your Service, My Lady(2019)

Ahgassiga Neomuhae!

Park Shin Hye, the student president and prince of Geumsoo High School, and Kim Ghun Ja, the princess and the granddaughter of the chairman, have a secret that no one can tell. What is their secret that doesn't seem to lack anything? And is the love blossoming between them just an illusion?

(Source: Comico)