Summit of Our Youth

Both Lovely Runner and Summit of Our Youth are romantic time-travel dramas where the leads return from adulthood to their high school days to change the past.
Each has:
-a heartfelt mix of second chances
-youthful romance,
-the twist that one character doesn’t know the other has also time-traveled.

- FL went back to her high school days,
- used what she knew to fix past mistakes,
- met ML—who turned out to be her classmate—and they helped each other along the way.

Same premise especially because of the theme of focusing on studying to make up for the mc's regrets.

In both drama the mc goes back to the past (in different ways). High school, romance,regrets, studying etc are all common themes between the two

- FL is miserable in her career and life outcome, struggling in the workplace and basically not where she wanna be.
- FL then in both goes back in time to her student days (HS/uni) and utilises previous life experience/knowledge to change her fate
- in both, the ML is a source of frustration in "original" life for the FL, and is also her boss in some way

time travel and not to give much spoilers they are actually quite similar except the husband wife plot

just the Japanese version of Korean drama marry my husband, time travel based dramas to fix their lives

fl travel back to fix her and her parents life and if u like this you will also like this short drama too , worth the watch
i think both are similar

It is similar in terms of their dynamics, both feature:
- older male/younger female mcs
- ml used to tutor fl
- age gap
Also certain scenes like:
- ml came to fl's parent teacher meeting
overall both are just feel good, stress-free romcoms!!