I Feel You Linger in the Air

ok this rec is mostly on vibes
they feel similar to me because of the mix of the fantastical element - ifylita with the time travel/being able to see the other version of yourself and motb with the teddy bear turning into a human - and a very serious storylines. i think they both have excellent plotlines about inter-familial relationships

- both series features the combination of an actor originated from nadao bangkok (nonkul chanon and pond ponlawit) and a CH3 actor who only got supporting roles in CH3 lakorns finally getting their first lead role through this BL series (bright rapheephong and peterpan tadsapon).
- elements of time travelling, both main characters got sent back in time because of them dying in the present after getting cheated on by their long term partners, although in Armin's case its 20 years while for Jom it's 70/80 years back in time.
- both main characters have a hard time adjusting to their respective circumstances when first sent back in time and don't even try hide the fact that they're from the future with the people around them.
- both male leads are TRUE YEARNERS. THEY YEARN. THEY SIMP extremely hard for the main characters. two forest green flags.
- both male leads use very gentleman-like language with the main characters.

Similar plot

The UNCUT is the better version in my opinion. They dig deep in the plot and characters more! Also, in the last episode they added a post-credit scene which is a teaser for the 2nd season.

Both have a supernatural plot that plays with time, with travel to the past for I feel you linger in the air and reincarnation for Century of love. The love interest has waited for many generations for the main character.