Lovely Runner Ep. 4 (Patreon)

Im Sol wakes up back in 2023, devastated to learn Sun Jae has died, and desperately tries to use the time-slip watch to return to the past. She eventually slips back to 2008, only to discover her younger self had started dating Tae Seong and rejected Sun Jae. Determined to change fate, Sol intervenes in his life—protecting him from trouble, disrupting his future career path, and even sneaking into his house, where Sun Jae finds her asleep. The episode builds toward a tense moment when Sol is harassed and falls into the water, but Sun Jae dives in to save her