Recommendations

-Same leads
-In my opinion is so much better than blooms at ruyi pavilion. the story line was very much more well written in legend of yunxi and had more depth. I also thought the characters in LoYX had more depth as well.
-for me blooms at ruyi pavilion was a bit more fluff than LoYx which was more serious had more plotting.
basically watch both! i watched ruyi pavilion bc i couldnt get enough of our otp

They are both as you can tell, crime/mystery/murder dramas. I liked both equally but towards the end it got a bit muddy and slow however if you really are craving a detective drama this might be it

Both are a supernatural/fantasy thriller centered in school, and shows a lot of bad things people can do to be accepted in school and in life. In Girl From Nowhere the FL is the "ghost" and, in Detention, the FL kinda has to deel with the ghost.

Both are crime solving dramas involving a great cast. however the main leads in Dr.Qin don't have any romance; its just friendship but the chemistry for friendship was there. I thoroughly enjoyed both although Dr.Qin is a bit more gruesome and involves more medical aspects

They both star wang yibo and are both wuxia/jianghu dramas. They also both have great fighting scenes in my opnion and the set is beautiful.

Dark, gritty, mature stories with a main character who is a sex worker. They were directed by the same person.

Both dramas have a similar concept. Both main characters use a device to contact a person from another time. In Kairos, it is a person from the future whereas in Signal it is a person from the past.

It's similar in the way that it's quirky, maybe not as quirky as Kotoko though.
There's also some comedy in KonoKoi, and a much more mature cast.

The romance factor is unrequited for the most part, similar to Itazura na Kiss.
There might be more heartache in KonoKoi because it only has ten episodes, while ItaKiss has two seasons.

The age gap between both leads are at least over ten years.
Naoki (Yuki Furukawa) and Kotoko (Honoka Yahagi) are ten years apart in age, while Takumi (Tomoya Nakamura) and Kiki (Nana Mori) are fourteen years apart in age.

both series set in university. cute first meetings with both couples and how they slowly fall in love. Saint Suppapong plays lead in both series <3

- both leads have lost their loved ones in an airplane crash
- both revolve around finding out the turth and eliminating the bad guys
- both leads have to go up against higher powers
- both include a lot of action, crimes and investigations

-innocent and kind female lead
-playboy male lead
-girl is heartbroken in similar ways
-ML gets chances to come clean

Both are the same stories.

In 2000 version Mark and Bee fell in love quite earlier than in the 2011 version.Even before he even married Bee.

In 2000 version Mark`s friend falls for Bee`s friends mother who got cheated on by her husband.

In my opinion both lakhorns are great..but i enjoyed the 2011 version a lot more.

because of the singers, who have a chance to show their potencial in different concepts.
Good girl and Miss back have judges who choose who performed better at night, and always bring guests.
The only differences are that in the Good girl at each end of battle whoever wins is entitled to use a cash prize, in addition to battling with guest artists.
Miss Back, on the other hand, brings artists that would have been forgotten by the public, for various reasons such as disbanding their group. Show a little about their lives and talk about the difficulty of debuting in the industry.
Good girl and miss back are similar because both are a music program with female artists, which does not have the concept of survival, but rather shows them in different concepts, performances and music.

both have silent main leads
the main lead is very intelligent
based on high school to collage and further

One is alien, another is long live "ghost", both struggle to go back to where they are coming from.
Good story supported by excellent acting. And there is Kim Soo hyun cameo at the end :)