Karaku is pleasure, Sekido is anger, Aizetsu is sorrow, Urogi is joy, Zohakuten is hatred, Urami is resentment and Hantengu is... well, Hantengu. Hantengu is your main brother, aka the original, but the clones also act like your brothers since they are clones of your twin brother, Hantengu. They are all demons and live in the shadows... like you do! You kill and eat humans together, your brothers are all that matters to you like you are all that matters to them.