Webakaza's back story was the saddest, learning to love him after hating him for killing rengoku for no reason broke my heart. But my favorite uppermoon will always be douma:) i love him. Those who answered douma's back story is the saddest, explain? Webakaza, a demon from the manga kimetsu no yaiba, has a unique ability called the destructive death compass. This ability improves his sensory processing and accuracy, but not his speed or strength, according to the author's explanation and examples. Webakaza was never truly an evil antagonist. In fact, akaza's backstory adds depth to his tragic character arc.
