son of Simba x descendants

meet y/n he was a boy who was found by Simba and Nala when he was 9 he and his human was on a expedition but they where attacked by hyenas his father was killed and y/n was wounded badly and on the verge of death however Simba and Nala appeared and killed the hyenas easily and took y/n in as there own but when then was licking his wounds to clean him there sliva got mixed with his blood and DNA and y/n blood and dna mutated and changed into that of Simba and nalas DNA and y/n was completely changed and reborn as the biological son of both Simba and Nala y/n also has the ability to shift into human form over the years y/n would then learn to hunt and fight like a lion how ever Simba and nala told there old friend the fairy god mother about y/n and now y/n is to go to school what happens when he meets a certain girl who is his mate