The female lead lives with multiple people.
With the help of the people around her, the female leads do learn to be happy and find a place of acceptance.
Cat Street is a bit darker than Atashinchi no Danshi but AND is better written. But both are pretty good in their own right.

They both have a similar tone.
Both male and female leads are in high school and live together (though for different reasons).
The female leads is are similar to each other: not too bright, but kind.
The male leads are similar as well: cold, but then warms up to the female lead.

Both shows have Lee Min KI in it.
Both have similar tone: Rom-Com with a lot of heart.
Both have a contract relationship.
Both Female leads have amazing friends that support her no matter what.

They both have a similar tone: they are both very funny, but heartfelt.
They both delve into issues that youth in society face today.
They both have great ensemble chemistry.

They both have table tennis as it's theme.
They both have different tone since As One is based on a true story about North and South Korea working together as a team. While Mix is a lighter tone and fun to watch.

The Smile Has Left Your Eyes is the adaption/remake to One Million Stars Falling From the Sky.
They are both dark in tone, and has a great premise. Both are recommended.

Both are well-acted and well written.

Seo In Guk is in both of these and he does a darker role than he has done.
They both have similar tone ( The Smile Has Left Your Eyes is a bit more darker).

They are different in tone and story, but both of the main female character is visually impaired.
Always is darker than Page Turner, but they are just as good.

They both have adults going undercover as a high school student.
Both are about bullying and school corruption.
The difference is that Angry Mom has one main story-line, but 35-sai is a formulaic story-line.

They both have music as its theme. Both have a darker side to music (when it comes to the male lead). Both have characters that play a violin and a piano. They both have a similar tone/mood in the show.

They both have different story-line, tone and feel, but one thing is the same: the female leads can see the supernatural (ghosts). Akuryo Byoutou is much more darker than Oh My Ghostess.

Both male leads are framed for murder and they try to find out who really did it.
Both male leads are prosecutors.
A Violent Prosecutor is more light hearted than Defendant, but both are still a great watch.