Both stories revolve around a older woman/younger man pairing, whose lives have gone massively wayward from where they thought they would be. Through their interactions with eachother, they both learn to be more confident and to chase after their dreams. Long Vacation is epic in both natural acting and superb use of side characters, but slow dance comes close.

While these are set in different stages of life, both are very light and fluffy webdramas with love triangles. They both have smart female leads and sweet, but grumpy male leads.

Both are love stories set in school (high school for best mistake and college for queen of the ring). Both of the romances kick off with a misunderstanding/straight up lie from the FL, and a love triangle ensues.

High school drama, love triangles (in as in click your heart, a weird love pentagon) and have a lighthearted, fluffy feel.

Both dramas center around young love, first love and friendships. They have similar vibes despite one being set in high school and one in college.

Both are high school teen stories with love triangles and high school drama. They have similar vibes and are really shows rat and fluffy.

Though everything else is different about these two, they both feature a noona romance where the male lead has loved the female lead since childhood, and became cold after obstacles got in the way of them being together.

Both involve Joseon era men and independent female leads. The vibes are similar along both stories.

These have very little in common on the surface in terms of plot and time period, but they both have insanely competent female leads fighting to keep their independence and their careers. The male leads are also similar since the are really sweet. Both are also noona romances.

Rookie Historian is not completed yet, but it already reminds me of this drama not just for the time period, but the strong female lead and prince pairing. Both are also noona romances which is a bonus. :)

Both have similar vibes and a sweet romance that transcends class (and time) along with palace intrigue and dangerous enemies.

Both series center around psychology and serial killers and the reasons they kill. The romance is more centered in the foreground of Meloholic, than in Hello Monster, but both involve strong female characters.