Kakashi must be Main character

Kakashi must be reborn with chakra and memorys intact (you can limit his abilities to water walking, wall walking, chakra enhancement, summoning and his lightning blade, if you so desire)

kakashi Must be the twin of oliver (older or younger doesn't matter)

kakashi must be a vigilante

kakashi must have similar mannerisms

NO DEPRESSING WHY AM I REBORN STUFF

optional:

Kakashi doesn't end up on Lian Yu

kakashi works with oliver openly from the start

pairing:

anyone other than Felicity (there are too many Felicity pairings so be original)