What If Kovu and rani are brother and sister? Lion King Crossover

{ sorry If my English isn’t right :}
Everyone knows that Kovu isn’t scar’s real son..... and everyone knows that Kovu and rani looks like each other ( because they are both brown lions I think ). So maybe is that where scar got Kovu from. It’s just a fanmade crossover! I hope you like the idea.
Kiara as brown lion = Kovu, Rani and Baliyo’s mother
Simba as brown lion = Kovu, Rani and Baliyo’s father
Credits masks:
Blustark
Pigeonomoutr
( let me know if I forget someon!!! )
I think the storyline is easy so if you have questions, just ask or use your own imagination!