Trash... not entirely.
The problem with Urashiki Ōtsutsuki was actually quite simple: he lacked sufficient chakra.
After all, the power of time and the power of space both ranked among the most supreme powers.
If Urashiki Ōtsutsuki had eaten Kaguya's Chakra Fruit, Uchiha Ensei truly could not think of any way to defeat him.
After all, merely replicating his Time-Reversal Dōjutsu had already been a tremendous nuisance.
"Were you unable to use Karma, or had you been stripped of the right to use it?"
"In this world, there is a clan called the Hyuga Clan, where a Sealing Jutsu known as the Caged Bird Seal is prevalent."
"As well as the so-called main family and branch family."
"..."
Uchiha Ensei briefly explained the Hyuga Clan's situation. Though it was only a guess, he felt that the Ōtsutsuki Clan's rules were probably not much different.
In fact, their concept of hierarchy was likely even more comprehensive.
According to Uchiha Ensei's observations, the Ōtsutsuki Clan seemed more emotionally detached.
It was precisely because he had noticed this that Uchiha Ensei began to doubt whether Kaguya Otsutsuki had truly united with humans of the Ninja World.
"It seems that no matter where you are, this sort of thing is indispensable."
"You don't need to fish for information from me. I'm about to die anyway, so I don't mind causing some trouble for the other clansmen..."
Judging from Urashiki Ōtsutsuki's microexpressions, Uchiha Ensei felt that his guess had not been far off.
A day later, Uchiha Ensei kept his promise and scattered a handful of ashes into the sea.
If Urashiki Ōtsutsuki could revive even after being reduced to ashes, then Uchiha Ensei would accept it.
From Urashiki Ōtsutsuki's final account, Uchiha Ensei learned of a rather unusual race.
Or rather, a destruction-driven group