I want to address Kisara’s soul first before anything else. It’s the reason that this makes Blueshipping impossible. I feel like a lot of fans don’t exactly understand a lot of what goes on in the Egyptian arc. Soul sealing and the stone tablets is a big part of that world. When someone gets their Kaa sealed into a stone tablet their soul is trapped there. This is a giant issue with the way Mahaad dies (though he fuses with his Kaa as well) and the way Kisara dies.
It means they can never reincarnate. Their soul is stuck in that form forever and ever and ever. There can never be a modern day representation of Kisara because of this. Her soul is simply the Blue Eyes White Dragon now. That’s all she is in modern day, though it’s nothing to sneeze at. That’s Kaiba’s only connection with her, albeit it it’s a very big one.
I don’t like Blueshipping either. I don’t think it would work at all. I think I might have mentioned it before but Kisara is entirely too soft for Kaiba. More of that is here! I hope I answered your question well enough!
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THANK GOD I’M NOT THE ONLY ONE WHO THINKS THIS. YES YES YES.Source: emmyfais