HP/Dxd

My idea brings inspiration from a few different fanfictions. I hope someone can make this idea into a great story.

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Mc will take the place of Harry Potter and can change his name later through a magical ritual or something.

Mc: dies gets 3 wishes (cliche I know) he uses one of his wishes to get a ai chip like from the Magnus world.

His second wish is more complicated as he specifies how he wants the power to be granted to him. As a baby a meteorite landed near the main characters house. in the meteor is a symbiote that fuses with Harry and stays with him because he is interested in the magical energy that Harry produces because he has never had a magical host before. On the night Voldemort attacks the symbiote is killed by the killing curse but the simbiotes body is fine and it fuses completely with Harry making him like a magical slime/ symbiote creature. Think of it like a cross between venom and Remaru from giving him a lot of abilities. he will have a human form and a slime/symbiote form. the symbiote will be black with red and green veins running through it like lightning.

(I specified this so people don't imagine upgrade from Ben 10)

I also want all his different forms of creatures that he can turn into to be slightly different coloring than the should be. like a dragon form would be black with red and green designs somehow or a unicorn form could have a black mane and red and green stripe spinning up the unicorns horn.

This gives him the ability to shape shift into any human form or creature he has analyzed. he can analyze a creature by eating it and it will take a few hours for the creature to be fully analyzed or he could fuse with it like a symbiote would and slowly do so that way wich would take longer. depending on the size of the creature would change the time needed to analyze it.

it will allow him to fuse and do a full diagnostic check of whatever he is fused with as long as he has analyzed the creature before and can change things about a creature like get rid of impurities, kill and replace cancer cells with healthy cells, or lock, unlock or strengthen bloodline abilities if he has analyzed the bloodline enough.

can add more abilities at the authors discretion but must not make him instantly OP.

his 3rd wish would give him a sacred gear but I don't want it to be a Longinus it would have to be something like twilight healing or something.

Harry would be the same age as Rias.

so it is not the 1980s just make voldemort born a few years later or something so Harry is born around

Harry would be left at his aunt and uncle's house like usual and the mc would replace Harry on his 10th birthday when the remains of the symbiote have finished completely fusing with Harry.

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that is the basics of my idea it can be a harem or no harem if you want but if it is a harem please add Luna she is adorable and not a lot of fanfictions I read pair her with the man character.

thank you in advance for anyone who writes a story based off of my idea or just anyone that has a highschool dxd or Harry Potter fanfiction that they like and want to share in the comments cause I am always in new of a good fanfic.