Recommendations

Both feature three males attempting to lose their virginity - only one of which has a steady girl friend.

Both have pretty similar humor

Characters in Explicit Innocence are a year younger (finishing high school) than those in Twenty but they are around the same level of maturity and state of attempting figuring out their lives.

Both ML are cold at the beginning and then change. Both FL are sincere and direct, which is refreshing in dramaland.

There's not so much sci-fi in Hello Monster but it's also about two brothers who lost each other and the mystery/thriller genre is very strong. There's also more romance in hello monster.

Both the dramas are realistic; every character in these dramas is well thought out and portrayed. Also, the story lines are logical and have a strong impact on the viewer.

Both stories are about a body swap.
The main female lead, in the beginning, is interested in another guy.
I think Secret Garden is way more funny and interesting. It also has a more concise plot and clear ending. Its heartwarming with an unexpected plot twist.

humane doctors - wonderful supporting chara(s) - sad but heartwarming case of medic - and most important: there is an onscreen aura of honesty and realness

Both movies is about someone that getting framed for a murder and how they are trying to prove their innocence

same kind of darkness with dosis of violence and sex, zebra is more dark and about ambition and revenge while Double mints is more about a sick kind of love

Both dramas are based on an autobiography of a real-life figure in Japan.
Both are also set in Japan from the past era.
There is also a little bit of story about the effect of WW in Japan.

The difference between the two:
Tenno is about a guy who became the emperor cook, whereas Gegege is about the life of Gegege no Kitaro mangaka from his wife point of view.
Gegege has a longer eps (Asadora) whereas Tenno is short like a typical Japanese drama.

Both are very difficult and thought-provoking movies that explore the victims of Sino-Japanese war and its consequences.

Both dramas have the same investigator and culprit in a cat and mouse chase. It gives that similar vibe for me.

The only difference is that Tunnel has a time travel element but Hello Monster does not, but deals with something in the past as well, but no time slip to complicate it than it already is.

Different stories but the main couples in both these shows have mad chemistry. You'll love the main couples more than anything else. Also the male leads went through a tragic experience and are helped by the female leads.

both stories are revenge type of plots and two of my most favorite revenge lakorn so far. i loved how the male lead loved the female lead unconditionally despite the deceit.

Both have strong female leads who don’t give into society’s standards which are ruled by mostly men, both are work related, Ms. Temper & Nam Jung Gi being mostly centred around how women are treated in work places and about sexual harassment towards women, Best wedding is about becoming a single mother and how ‘immoral’ that is without having a man as your husband.

Both are fantasy drama, related to God, rippers, and main leads are fantasy characters, lead actress is a human, demon/god fall in love with human, in both drama lead actress can see ghost from childhood.