Episode 8 of *My Youth* opens with a heart-wrenching moment as Hae finally unveils the truth about his illness to Je-yeon. The following day, Seok-ju and Tae-rin immerse themselves in a whimsical world of bubbles, indulging in a delightful and carefree activity that brings them closer. Meanwhile, Je-yeon attempts to distract herself from the overwhelming news by filling her day with various diversions, but her resolve crumbles under the weight of Hae's impending demise.
Later, she seeks solace near Hae's home, where they engage in a poignant conversation about his condition. Hae reiterates his reasons for being unable to be with her, and Je-yeon, with a heavy heart, finally accepts his decision and leaves him. As Hae grapples with the harsh reality of his limited time left and the burden it places on him, Je-yeon finds strength by visiting her mother and embarking on a hike with her.
Now, the secret is out: Hae is the acclaimed author of a best-selling novel. His father, who has recently taken over a publishing firm, reaches out to him with an offer to re-publish his work. Hae seizes the opportunity to confront his father at the firm, demanding an explanation for why he had abandoned him. Yet, he is met with silence and no reasonable justification.
Hae also confides in Nu-ri about his encounter with her mother, a revelation that does not sit well with her. Seeking solace, he turns to alcohol for the first time in his life, and Seok-ju is left to escort him back home. The next day, Hae crosses paths with Je-yeon, who has just returned from her visit with her mother. Together, they embark on a mission to deliver chairs to Tae-rin's new workplace, where they end up spending quality time. Hae takes it upon himself to teach Je-yeon how to ride a bike, an endeavor filled with laughter and gentle encouragement.
The episode reaches its climax as Je-yeon, with determination in her eyes, tells Hae that she cannot give up on him. But Hae, his heart heavy with sorrow, refuses to listen, coldly declaring that he doesn't like her and leaving her behind. Later, while in the washroom, he experiences a sudden nosebleed, a stark reminder of his fragile state. When he returns, he is consumed with worry upon realizing that Je-yeon may have been involved in an accident, bringing the episode to a dramatic and suspenseful close.
