Both main characters experience personality shifts. From scaredy-cat, they become ruthless during times of need. They accidentally help people and deal with cool female police detective.

The comedy is also similar - slapstick, cruelty, and dark humor.

It feels like Bad and Crazy is also filled with cinematic references to other detective shows (and even western movies). Meanwhile, Psychopath Diary acknowledges the horror/thriller movie references, because the main character is an avid fan of those.

The main female lead has struggled with money and thus ends up living with the main male lead. She is in debted to ML. < both dramas share it

Living together and falling in love is also present. In Promise Cinderella there's a love triangle.

Two people decide to marry because it's more convenient (as well as financially more stable)
Yet main leads start to become closer over living together.

Both feature the stories of serial killers
Yurigokoro is show-cased in diary entries, it focuses on female serial killer
Memoirs of a Murder features the book, interviews of a male serial killer
Both have twists and unexpected turns and twisted relationships.

Secrets, murder, and friendships. It all happened in the past and characters in the present are discovering the stories of women, are they true or are some parts fake?

Both dramas are suspenseful and feature strong friendships between women, at times twisted and bloody.

Different parents with different stories and parenting styles
Befriending each other and learning from said experiences
Both series are heartwarming and short

Both are rather slow
Both are about people stuck in environment where they need to survive with limited resources
They are waiting for government to save them

Both are about survival + living in one room w/ limited resources
Getting outside of the room might mean instant death
Both are rather slow

• Main actresses have a similar vibe, dangerously cat-like
• Showcases extremes to which wives go to take revenge on cheating husbands
• Husbands thirsty for money
• Suspenseful and tight script, full of twists and turns
• Boku no Yabai Tsuma has only 9 episodes | | The World of the Married has 16 episodes
• Bingeable

Both movies feature broken women, which are s**ally harassed.
The atmosphere is also similar.
Both stories are heartbreaking.

Both feature families which got put into extreme circumstances.
In Yokoso Wagaya e it's stalking
In Survival Family it's the fact that the whole world lost electricity

Both families have character development and bond through hardships and start to appreciate each other more.

Yokoso family starts as more harmonious and their bond gets only stronger.
Meanwhile Survival family is rather distant but through hardships, they bond.

Unexpected revenge plotline. In Bachelor, it's only centered for one character, but in Watashitachi it's the center of the plotline. Also, both dramas are suspenseful and binge-able ?
Also, male leads have a similar vibe.