Both FL like King in other world. Time travel is involved in Splash Splash Love. Parallel world hopping in The king: Eternal Monarch. Both couples are cute. Splash splash live is a short carefree drama while The king eternal monarch is a 16 episode drama.

Similar fated love. Both fantasy dramas. Both Chinese. One has time travel while the other has a reincarnated lover.

Both include time travel and a sweet romance. Splash splash love is a movie while someday or one day is a drama.

Both have reincarnation of leads. They both loved each other greatly but because of bad circumstances died.

Both involve a dead person. Involves moving on after someone died. Both have romance finding love. Deja by is more angsty then I am sorry, I love you.

Both female leads are older than the male lead and have a hard time accepting him as a boyfriend because of his age. The females have other female friends and have high paying jobs. They have attitudes.

They have same premise guys can’t remember accuses of a crime. And a cop desperate to solve case will do anything.

There are secrets revealed. Both male leads are doctors with talent. They are both a little angsty. There are people that dislike the male lead.

They both have reincarnation of characters. Lots of flashbacks and stuff. They both have a mystery vibe.

They both involve a person dying and going into another persons body. Both people learn new things after they “died”.

Both FL hide their true identity from the ML. The FL don’t come from welathy families. The ML are not happy when they find out the truth.

Both involve the male lead being blind, and then gaining their eye sight. Both invoke the male lead having emotional baggage.