It don't really break the rules since she can do many time lines.
She did one where think she was Nika but shit going to be half ass anyway.
If her power was that crazy she could turn huge gaint or at least turn as strong kuma or time line where she had haki and not kick about by Kizaru .
She did one where think she was Nika but shit going to be half ass anyway.
If her power was that crazy she could turn huge gaint or at least turn as strong kuma or time line where she had haki and not kick about by Kizaru .
Oda pulled it straight outta his ass to make Nika even more prominent and important.
Even if she's not strong, if she becomes even remotely similar to gear 5 luffy, it's trash.