[1] He initially garnered attention for his portrayal of a college student and Suzy's younger brother in the melodrama Uncontrollably Fond.

[12] According to authorities, Lee was drinking with said female celebrity when he attempted to kiss her and make physical contact, but was rejected.

[14] Lee remained silent and continued filming the 2018 television series About Time and program Music Bank for 40 days without informing the production staff that he was under investigation.

[21][22] On July 12, the first day of trial at the Seoul Eastern District Court, Lee pleaded guilty to charges of sexual harassment and criminal threats.

[28][29] During the hearing, one witness, the victim's boyfriend who saw Lee swinging the knife,[30] was called to the stand for testimony and to undergo questioning.