Black Zetsu, I'm going to fuck you to death! At this moment.
Only now did Kaguya realize how badly she had underestimated her enemies. Black Zetsu, too, realized how badly it had overestimated its mother, Kaguya.
Being surrounded by ten people put far too much pressure on Kaguya.
Fighting one-on-one and being ganged up on were worlds apart.
Anyone who had played games knew that you could slay a god in a duel, but when you were outnumbered, even three dogs by the roadside could leave you in a sorry state.
Kaguya had struggled against Six Paths Naruto and Sasuke alone. With a bunch of powerful fighters interfering and attacking from all around, she was in even worse trouble.
Even with her Byakugan, which let her observe her surroundings in every direction,
seeing an attack didn't mean she could block or dodge it perfectly!
Besides,
almost all of Kaguya's abilities could be countered or dealt with easily through the ten shinobi's expert coordination.
Her [Byakugan] was suppressed by Tobirama's Tenseigan.
Her [Rinnegan] was neutralized by the other Rinnegan.
Her [Truth-Seeking Orbs] were neutralized by Six Paths Nagato's Truth-Seeking Orbs.
Her [Eighty Gods Vacuum Attack] was blocked by Naruto's Asura Fist.
Her [Rabbit Hair Needles] were countered by Minato's Black Eye's Sukuna Hikona.
Her [Yomotsu Hirasaka] was also neutralized by Obito's Dual Kamui.
Even her [Divine Tree World Birth] was held back by Hashirama's Wood Style.
In other words,
aside from her ultimate technique, the All-Killing Ash Bones, every other ability Kaguya used could be countered by the shinobi.
And it didn't help that Kaguya herself had little combat experience or awareness.
In a high-intensity, high-stakes battle, her mind could barely keep up.
As for Black Zetsu? It was only half-competent. It could manage schemes and tricks, but it had never