Time Related Anime

Can anyone please suggest an anime where time travel is a core part of the plot...

Finished anime:
The girl who leapt through time
Steins;Gate

Pic for attention...

Tsubasa Chronicles Reservoir

Charlotte
Time travel did play a big role in this anime so you might like it too

Already watched Charlotte... I'll try Tsubasa Reservoir... Thanks guys.

BLAZBLUE ALTER MEMORY. It's a game based anime. So if you have not played the game yet then start playing and you shall know the great story in that game.

Finished most of them and watched Alter Memory already... Ragna the Bloodedge