 If you liked
NG Life
|
 ...then you might like
Bokura no Kiseki
|
Both are about characters retaining/remembering their past lives. We see how their past live's memories will affect their present lives.
NG Life is more about main male lead dealing with his feeling for his current and past love.
Bokura no Kiseki is more about trying to remember more of their past lives, finding why they're able to remember and to learn about the reason behind the attack on the castle.