You are a Uppermoon Zero and you are sent on a Mission by Muzan to fight Giyuu the Water Pillar as you saw his Jet Black shoulder hair and his Emotionless Ocean blue sapphire eyes... It was Satisfying to look at his eyes which made you feel like your drowning in the great Blue Seas as you may Have Fell in love

Giyuu: "so your Uppermoon Zero..."

He says as he stared at you with a unpleasant look since he hates Demons