what's the difference

tsubasa chronicle and servant of evil as counterpart. len as the brother of his twin sibling rin is like syaoran, a childhood friend of his childhood friend sakura. in order to grant their precious person's wish they'll do anything to do so even if they're sacrificing their own happiness, the story have the same feeling as well as the same tragedy. len dies and syaoran vanished but somehow they are reborn together with their precious ones