Ha Young’s character, Choi Ga-yoon, is described as the daughter of Choi Gang- seok and Na Hwa-jin’s fiancée, but one source also says she was a passionate teacher who was murdered by her student two years earlier and that her death drove her father to create the agency.

What seems to happen

The most consistent read is that Ha Young appears in a tragic backstory rather than as a living present-day character in the story’s central events, with her death functioning as the emotional trigger for the plot.

Why people are asking

The show has been trending since its June 5, 2026 release, and viewers have been discussing its dark premise and violent themes, which makes Ha Young’s fate a common point of confusion.

Note on sources

Public descriptions of the character vary a bit across writeups, so the safest answer is that Ha Young is tied to a death in the backstory, and that loss is important to the series’ setup.

TL;DR: Ha Young’s character is generally portrayed as having died before the main story, and that tragedy shapes the plot of Teach You a Lesson.