Here is my theory:
Scar was a teen when he met Zira, they both loved each other but didn't mate. Soon two lionesses talked to Uru (Who was Mufasa's mother only) and the younger, Sarafina was pregnant with a cub, her mate died so they wanted Taka to be her mate. Taka accepted, wanting to be more loyal .
Zira was hutning when she heard lionesses talking. 'Oh! Taka has a very nice mate...And daughter' Zira was so mad she broke up with Taka, who promised he would allow her in his lands when he is king. Scar mated with Sarafina, out came Mheetu. Scar became king, allowed Zira in. And shrtly Zira became queen, saying she was giving birth to a heir. Sarafina was mad, she had a son with Scar! Zira gave birth to Nuka, he was scarwny not like Mheetu, Zira told sCAR to excile Sarafina's family and he did. Sarafina went to her old pride with Mheetu, but Nala went to find help for Sarabi...Her lionesses...Her lands! She then journied for about 3 months until finding Simba again, and she became pregnant, Simba found out and told her to stay here, but Nala disagreed, fi he didn't go back to save the pride lands, his home lands, then she would leave him behind with her unborn cub, that's when they argue. Simba finds Rafiki and saves pride lands, kills Scar!!
Then Kopa is born and presented. When Kopa is a cub, he plays in the pride lands with Nala, soon Nala falls asleep and when waking up her belly moves, she was having another cub

. But where was Kopa? Kopa wa splaying with a female, Vitani but Nala and Zira found them both, and Nala pushed Kopa away and they both fought. Nala bit into Zira's ear, and started to bleed, while Zira pushed her down, Simba came with lionesses, which Zazu had told and they saved the royals. Zira was exciled along with her scar followers. Soon Kopa was playing alone and Zira caught him, he managed to escape, injured, and forgot his way to pride rock, getting lost.
About whole Uru thing xD :
Ahadi and Uru were both honey colored parents of Mufasa, a heir. Before they ahd Mufasa, Ahadi had an affair, Uru didn;t know about, Jawa (Ahadi's affair) Gave birth to Taka, menaing 'waste'. Uru was shocked to find our Taka was her mate's son but forgave him for as she had a son who needed a father...And better yet, she loved him. Jawa left Taka with Ahdai, she had no interest in raising a cub, so Ahadi and Uru both raised him, but Ahadi told him he wouldn't be king and Taka knew why...He was just a mistake from Ahadi...He had no relationship with Uru...An he hated Mufasa
My theory
