Both are good Japanese film to watch. They both involve male lead travel to the past to fix something. Both has some romance. Fun watch. Love both male leads. Worth watching.

Both involved male leads went back in time to fix the event that will happen in future.
Can they prevent an event from happening?
Will they able to fix things up? Will they be in danger?
Fun, interesting , plot twist, good watch

Both films involved male lead travel to the past to prevent something to happen, to fix things, for the love one. Can they accomplished their mission? Can they fix and change the future?

Both involved male leads time travel to save the love one.
Story gets intense, mysterious, plot twist.
Showing human being struggle to be on both good and evil side.

The male lead was able to travel back and forth to get things fix.
He have had some regret, unfinished business in previous life
Can he get things done? Can he achieved his wish? Can others help his spirit in any other way?

Both involved male lead travel back in time to prevent the dead of their love one
Can they change the future when there were back to the past.
Fun, intense, mystery time travel film to watch

Both drama involved two generation spirit intertwined.
They somehow able to get into others body and the body act for the other person
It shows some contrast of younger generation silly, careless, and free characters with the older generation serious, thoughtful, and reserved character.
Some fun, funny, crazy, serious, and confusing moments.

Both female lead in both film are dead but their soul remain wonder around for the unfinished business. That involve their love one.
Will they able to accomplished their mission, goal or wish even as a ghost?
Beautiful movies to watch

Both are time travel with two male main lead
They can be antagonist or protagonist
Both are fun, mystery, action, drama
One younger and one older inter-twisted.

Both male lead were dead or near dead, but the soul still wonder around
The story tells how the male lead spirit trying to fix things, he see things more clear, and understand .
Can he get things straighten out? Or is he helpless?

Both involved main lead travel through time.
The story of both involved their love one
The young self and the old self
Can they change the future?

Both are time travel, some science, different generation
Intense, revenge, action, thriller, you got it all
There are antagonist and protagonist in both