Both are short korean dramas showing a romance between two guys. Theyre both W-Story productions that can be viewed on Viki.

Both are short documentaries by Josh Kim and both are available with subs on his Youtube channel with the same name.

Both are films with multiple stories focused on human interaction and conversation. Both are a little slower. They have the same director and screenwiter too.

Both taiwanese movies have the same kind of love triangle and Joseph Chang plays one of the main characters.

Both follow youths in the 1980s and give insight into the political situation at that time. They also have a romance aspect and a gay man character. Theres also a time skip in both.

In both a female lead feels insecure about herself and relationship because she has to deal with mean remarks about her weight from random people.
Other than that both are comedic, romantic web dramas with two seasons each.

Very short comedic webdramas by the same company. They center around daily situations and also have romance focus (banana actually more than 72 seconds)

Sitcoms about the interactions of multiple people living in the same house. In both there is also a storyline between one of the guys and a character played by Apple.

Both are critically acclaimed thriller movies by Bong Joon Ho and Song Kang Ho plays a main character in both.

Both are thriller movies by Bong Joon Ho that show violent detectives that are abusive during interrigation, feature a character with a disability (in Mother its the mc and in Memories of Murder a side character) who is accused of being the murderer of (a) girl(s). They leave you guessing till the end.

So im not sure how similar theyre really gonna be but in both the mc gets a heart transplanted and a romance ensues between them and the crush/partner of the previous owner of said heart.

Although very different in tone and story both are korean mini dramas about a love story between two guys with happy endings.