Crossover: After Restoring Humanity, I Became a Saniwa

I accidentally transmigrated into the body of Fujimaru Ritsuka and set out to save humanity. But why did I become a saniwa after saving humanity?

Fujimaru Ritsuka was selected by the Time Government and tricked into going to a dark citadel: Weren't the sword warriors supposed to be nice?

Corrupted swords brandish their blades: Don't leave, Saniwa!

Everyone in Chaldea: Master is ours!

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