Buta No Gotoki Sanzoku Ni Torawarete File

This moment is the crucible. The character’s previous identity—as a mage, a knight, or a reincarnator—is annihilated. They are no longer a protagonist; they are meat.

The phrase roughly translates to "Being Captivated by the Three Realms like a Pig" or "Being Held Captive by the Three Worlds like a Pig". Buta no Gotoki Sanzoku ni Torawarete

This setting forces the writer to answer a brutal question: This moment is the crucible

A pig does not know it is filthy. But the mud knows. And the mud remembers. Buta no Gotoki Sanzoku ni Torawarete

The phrase might be from:

A rough translation is: "Captured by bandits who are like pigs" or "Taken prisoner by pig-like bandits."