Thanks to Kakashi and Obito's discovery, Kushina and the others learned Liao Wu's whereabouts, then used Minato's Flying Thunder God to travel to Shukaku's lair.
But Hong, Rin, Shizune, and the others were captured by Ryobu's Clone. Just as everyone ran out of options, Kaguya suddenly appeared and swallowed the clone whole...
After hearing this, Tobirama could draw no conclusions. They knew too little about Kaguya, so he summoned a clone of the Slug Sage.
Tobirama told Slug what Kushina had said about Kaguya.
After listening, Slug said, "Back then, Liao Wu and Madara attacked the moon together and blasted away a corner of it."
"The moon is bound to Kaguya's seal. The damage to the moon may well have allowed some of her chakra to escape!"
Slug's words put everyone at ease.
"If it's only a portion of Kaguya's chakra, there's nothing to fear."
"Exactly. Black Zetsu has taken over Madara's body, but Kushina and Liao Wu have Madara's Rinnegan."
"If Kaguya wants to undo the Sage of Six Paths' seal, she'll have to get both Rinnegan first."
It was only a portion of Kaguya's chakra, not Kaguya at her full strength. That did not frighten them much.
Slug wanted to say something, to remind the members of the Ninja Sect not to take Kaguya too lightly.
Even if it was only a portion of her chakra, its quality still surpassed that of every other system.
But after thinking it over, he decided against it.
Indeed, Kaguya only had a portion of her chakra and could not cause much trouble unless her subordinate, Black Zetsu, managed to recover the Rinnegan.
Tobirama, however, remained levelheaded. "Even if it's only a portion of Kaguya's chakra, she isn't to be underestimated. She's the Sage of Six Paths' mother, the Progenitor of Chakra."