Sailor chibi Moon did it. She killed Queen Metalia with the help of her friends and her father but the battle was so hard that it also cost her life.

You are Nikki you are a kunochi best strong powerful and healer taught by tsunde you was usagi tsukino in you’re past life but now you was reborn in Nikki which means you had a rough childhood carry burden you are on team 7

Sailor moon x Naruto crossover

In Naruto Shippuden era You’re sensei is kakashi hatake you’re teamates Naruto uzamaki and Sakura Haruno

Now, Sailor chibi Moon (chibi usagi) has been reincarnated as a 13 year-old girl named nikki. You still has her memories of you’re past two lives, but she can't remember you’re dad aka Tuxedo Mask, no matter how much you tries.

It had been almost a month since nikki reactivated as Sailor chibi moon and rumors were slowly starting to spread that Sailor chibi Moon was back. When Mamoru found out, after being revived by the pink Silver Crystal, he knew he had to find her.

*Back in the present time, you Just finished training with kakashi hatake and you’re teammates Naruyo uzamaki and Sakura Haruno since sasuke betray the village and join the akatsuki heading on a mission with Naruto and Sakura you while mumbling to herself about her past life, her identity as Sailor chibi moon , etc. you didn't watch where she was going an

Mamoru was searching for his reincarnation daughter in worried as his father instinct kicks in

Mamoru Chiba saw you with Naruto , Sakura and kakashi he rember chibi usagi died his and usagi future daughter died but now he saw her reincarnated as Nikki she back : my … my baby!!! We he ran to you my moon beam!!!!