Recommendations

Similar survival themed BLs and similar leads: untrusting, strong all-rounder × smart, tech savy but naive.

Both leads born on the same day in welcome to Samdal-ri as well. More mature though.........................

- college setting
- three main couples whose stories are separated into three arcs
- comedy, fluffy, wholesome
- endearing friend groups
- happy endings

if you're coming from P10L to Fourever You, the first season isn't necessary to watch in order to understand the second season, however I would recommend both seasons if you enjoy fluffy good feeling type shows.

It have the same male lead with the costume ancient theme. And also give the power struggle energy and solving within it.

The characters die in an accident but get the chance to be transported back into the living world - but end up in a different body. Through this, they aim to get rid of unresolved tensions, issues and misunderstandings and speak out the feelings theyve been holding in for so long
Themes of grief, dealing with loss;
homoerotic tension
comedy

romcom kdramas in which two characters switch bodies and have to navigate a new situation
bromance elements
one of the leads is/was a popular actress

short kdramas in which the main characters accidentally end up back in the past/back in high school again and use this chance to save a lost loved one
always meet again is a m/m romance, blue birthday is a f/m romance

romance, comedy dramas with actors who are/were kpop idols
fantasy elements that cause the female lead to end up in the body of a guy
hetero romance with some gay vibes due to the body switch

Both Dramas show

Age difference

One divorced partner

Workplace Romance

Relationship struggle due to conservative thinking

kdramas with:
-different time lines , one where the characters are in high school and one where they are adults
- female lead is popular and known in present timeline
- one of the characters is a student athlete
- Bo Na playing one of the central characters
- romance and comedy

Dive into you features a body swap/time travel plot, while 21-25 is grounded in reality and follows the characters grow and develop over multiple years

Minidramas in which the main character travels back in time to save a loved one lost to suicide.
Main role is being played by an idol from SM
romance, drama

dramas in which the female lead travels back in time and uses this chance to save the life of a lost loved one
fantasy romance

Kdramas in which a female lead is transported back in time, ending up in a different body, and trying to save the life of a loved one who is dead in the present time

both are kdramas with a time travel aspect
living as high school students in the past with the aim of trying to prevent something
romance elements

both include shamanism and people fighting against unknown powers nor human and not ghosts. Also both are good horror thiller