Tonton Streaming Our Blooming Youth (2023) S1E4 - Episode 4

Hwan gives Jae-yi a second test. She must figure out why the messenger he sent to Master Min's house was killed and Jae-yi finds out it has something to do with Hwan. And finally, Hwan gives the last test which is to solve a serial murdercase. Now Jae-yi must face her fiancé.