Any drama where the leads travel back and forth in time. like its not a one way stuck or in somebody else's body from the past/future. but where the traveler finally ends up coming back to their original timeline ( or dimension). but can go back if they want to.

some examples would be :

  1.  King: the eternal monarch : parallel mirror dimensions where ml and fl and others can pass through a portal
  2.  Love is an accident : FL time travels in ancient time. is able to come back to her time along with ml
  3. The Girl Who Leapt Through Time and all its series and adaptations : fl can go back 24 hours in time. this is not exactly what im looking for but the entire franchise is Sci-fi where the creators of the time loop have gone in past and come back to change future and accordingly.   one   two three four five : here "two" is the one where a going back and forth in time takes place

Any other dramas like this? where the time travel/walking into other dimension , aka through space and time is flexible 

 Ichika Kaneki:
Any drama where the leads travel back and forth in time.

The above two did not get great reviews but i am firm believer that you should try things out for yourself. I personally thought they weren't that bad. 

  • Live up to your name
  • Todome no kiss
  • Proposal Daisakusen

Tomorrow with you - I haven’t finished it, so who knows in which timeline the lead ends up in, but other than that it fits. 

Nine Nine Times Time Travel - one of my all time favs

Signal - doesn't quite fit the bill but has time travel elements