Recommendations

The same idea of people who were given an extra time after their sudden death

I think that Kikujiro & Lost and Love have lot of similarities, the first one is that they are both kind of Road movies, we got to travel with them, visiting, Japan and its sceneries in Kikujiro and the same with Lost and Love but this time in China. Two protagonists (Kikujiro with Masao) and (Lei Ze Kuang with Zeng Shuai) are looking for someone and in that purpose they have to go on a long journey, they meet many people on the road, funny, kind but also some weird and crazy people as well.
Cinematography is breathtaking in both movies too.

Only the genres are a bit different cause Kikujiro is more funny and crazy while Lost and Love has a sad but very heartwarming tone. Two gems in my opinion;

it is another short drama about school, friendship execpt this one has the characters of a rookie band called "astro"...

both have teams, fighting for justice,,,,,some exceptional martial skills,,,and main lead of both shows have quite a intense past

Both is a story of love that is not just based on appearance but what important is in the inside that matters.

Both romantic comedies involves a rich guy with a poor but cute/nice girl. Similar themes. Great actresses in both, though the overall acting of the cast in fated to love you is probably better.

both have funny characters in addition to the main cuple, they have not the typical story of romance, maybe some love triangle but without becoming awkward to watch.

-action genre

-they have to fight in both movies

- while watching ''Gantz'' I thought about the other movie

-have similar plot and feeling

These were like hand-in-hand productions. They are so similar that the ending is kinda obvious though..
-Mental Disability
-Sakuto (Mental age of 6) and Si On (Mental age of 10)
-Medical
-Beautiful

In both series the main woman isn't considered a suitable partner by the men around them. They end up meeting younger men who will help them change themselves.

In both series the woman wants to be a teacher and she enters in conflict with a student.

both shows based on political strategies....nirvana in fire is visually more appealing and the story line is complementing the the overall gist of the show, indeed a epic show.....whereas three kingdom is pretty good too but with the quite long progression of the story,,

both representing the same era...... three kingdom is detailed and started from the beginning of all the strife... however in the movie there is focus on the battle of red cliff.
red cliff is one of the best historical asian movies...three kingdoms is also pretty good.

City Hunter is good acting, good action, good story but when it comes to Healer it is better acting, better action, better story.
The female lead is same in both drama's although her character is more thorough and defined in Healer than in City Hunter.
The romance in Healer definitely overpowers the romance in City Hunter. the adaption is better as well.
In similarities, is the good guy second leads and the overall action.
If you liked City Hunter, Healer will swoon you :)

They are both based on Itazura na Kiss, though Love in Tokyo is a much better remake.