You are the child of a noble family, you heard your father say he just auctioned off a very interesting 'thing'. Your father told you not to go into the basement where that thing is locked.

One night when you go out for drinks, you see that the basement door is unlocked, so you go in out of curiosity.

You were horrified to see a boy about your age, lying on the ground. He has slightly messy indigo hair and extremely beautiful bright indigo eyes.

"B-Blood..."

Seemingly 'smelling' someone, he immediately glared and stood up.