Recommendations

I automatically think of tumbling when I think of Rookies and vice versa. All trouble boys learning a sport together. They learn to build a friendship with their members and learn to love the sport.

They both have high school young men, and all the members learning a sport, the only difference is that water boys didn't have delinquents. Rookies were a bunch of bullies, thugs, outcast brought together to play baseball.

They have a similar concept of young boys competing in a sport, water boys synchronized swimming and tumbling with rhythmic gymnastics. It was during high school, through the sport they learn to build their friendship and love the sport.

=> Adult characters reminisce about their youth and first love when they were teenagers in the 1990s
=> There is a sad event in both shows that will make viewers think about the show for weeks
=> Female leads are played by two amazing former child actresses considered rivals by many (Kim Yoo Jung and Kim So Hyun)

Revenge of others is pretty much the high school version of King of Pigs. There's a mystery of a character's death in each show, and the main character is trying to get revenge for what happened. One of the characters in revenge of others takes on a punisher type role, just like the main character in king of pigs.

The movie and series speak such deep volumes.
Both are based on a classic song- first love and Ito.
Both are stories based on first love.
They both are a love story and fates bring the leads to meet each other again later in life, sparkling a second chance at love.

Nostalgic, cheesy, idk what the similar vibe was, uncomplicated? Like the early 2010s drama. Suuppperrr shallow brainless watch

They have in common : Bullying, vengeance, school fights, clever ML.
They’re also both based on a Webtoon.

Both series show flawed characters and include toxic relationships where one party wants something else than the other party (usually friendship X love X sex), so there is a lot of jealousy and suffering.

In both the series, the relationship of the main couple basically begings with sex and the feelings of the main characters to each other remain unclear for a long time although they sleep with each other repeatedly. Both series include hot 18+ scenes.

Both shows are light-hearted with no much drama or plot in general, good when you want to turn your brain off and just enjoy the cuteness.
One of the main characters is childish but cute.

In both the dramas, the main couple consists of a confident gay who falls in love with someone who does not know he can be attracted to men. The first guy is so caring towards the other one other one that the other one eventually falls in love, too.
Both series have sexy scenes and the main leads have good chemistry.

I don't think alot needs to be said both great variety shows with Yu Jae Seok and Lee Kwang Soo

In both series, the main characters are lovers before they are boyfriends. One of them loves the other one but the other one keeps refusing his love for a long time. They fight a lot but also have a lot of passionate sex and eventually, they become a loving couple.

Both stories sound similar. The main characters are married in their childhood when the boy was a prince and due to some reason, his wife dies. Which he never forgets. There are rumors that the spirit of his first wife is wandering. A few years later when he becomes king, he meets a girl who looks like his first wife.