If the spin off " the originals" is created do toi think we won't see klaus and elijah in vampire diaries ? ( even if we had not seen elijah for a while ... :( ) ? do toi have plus information about it ?

I think thy thy won't be in the montrer as much but I think that they will still appear in some episodes. Ain't no party with out the originals😎

Actually we won't see them in TVD anymore that's the whole point of giving them their own show. A spin off is an extension of the show's univers so people from The Originals might hear about important stuff that happens in TVD but they won't interact, unless there is crossover between the two shows. Most likely it'll be a supporting character from TVD that will go in The originals for one episode ou two. Maybe Rebekah and Eilijah will go back to Mystic Falls a few times but it'll never be for long. Of course the producers could decide that no crossovers are allowed but I highly doubt this would happen, I'm sure we'll get our crossovers it just won't be as often as we hope.