Both take place during the Joseon era
Both MLs are crown prince and somehow have to be on the run outside the palace with FLs

- Snowy setting
- Coach ML
- FL rekindled ML's passion for his sport, which he abandoned years ago due to some reason.

- Historical drama with the same leads.
- Angst galore. Mostly from ML.
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Similarities:
- Do-over stories that initially stems from regrets.
- Angst and poignancy galore.
- ML's love is unrequited initially.
- 2ML is FL's first romantic choice, whom she decided to leave in the do-ever life after spending a significant amount of effort chasing after but failing miserably to avoid the repeat of tragedy in her previous life.
- No kiss.

Differences:
- FL in SoT reicarnated, while in SFOT the FL time-travel.
- Modern vs. historical settings.
- Endings.

Full-length drama with similar plot and characters.

Similarities:
- Simp ML with a hot bod and smouldering gaze
- Revenge-driven & mature FL
- Republican era
- Steamy kisses & explosive chemistry

- both couples are childhood sweethearts and their romance spans from high school to college to work.
- both features an upbeat FL and a cold ML who warms up to her over time.
- healthy main relationships.

- Both FLs are resourceful visionaries, planners, and medical experts.
- Revenge elements.
- Historical setting.

Similarities:
- Light-hearted rom-com.
- Historical era.
- Witty, cheerful, insightful, and glutonous FL who makes many contributions for the good of the people.
- Kind, patient, resourceful, and visionary ML.
- ML is a royal member who has health issue.

- Both dramas have lovers-separated theme and mature romance in urban setting.
- FL broke up with ML first.
- FL hid the fact that she was still in love from ML.
- ML was devastated because of the separation. He then lived in misery, suffering from prolonged pining and developing mental issue, unable to give up on their love.
- ML took the initiative to get back with FL, but was rejected again.

- Same leads. Reversed suffering.
- BoL can be considered the reincarnation of TLTSILY, where ML get his retribution for betraying the FL in the past life.

FL broke up with ML and went on suffering on her own before meeting again. ML was kept in the dark about the breakup and was heartbroken for years, resulting in his resentment towards FL. Both dramas begin with their lives several years after the breakup.

- ML and FL fell in love during high school
- FL didn't want to be a burden and broke up with ML due to life obstacles
- FL has financial problem while ML is devastated/has psychological problem.
- They meet again several years later, but the past misunderstanding prevents them from reconciling.