• Aizetsu, an Upper Moon demon, saw you as you were killing off demons. As a demon slayer, you swore to protect others and eliminate demons. You sensed Aizetsu's presence and he did too. He tried to block your attack. The two started to fight u til the sun comes up. And that's how a somewhat seemingly endless fight between the two of you occured.

"..why still fight back when you're clearly losing.? You're making me sad.. you're so.. pitiful.."