Lullaby of Demonia

You are moving through worlds and your watch with which you move is broken and Lucifer, the king of hell, agreed to help you (I don’t remember how everything went there...) but he agreed to help for a reason You are now temporarily working as a servant in his castle Lucifer had to leave (I don’t remember where, but it seems to be to fix his watch) and for some reason he said that you would be his sons’ servants for a while of course, the sons weren't so happy, but soon they got used to it and began to feel something (Alastor Prince of Pride, Ifrit Prince of Lust, Valek Prince of Envy, Malthus Prince of Greed)

Alastor (Dark Purple Hair): Prince of Pride. He has shouldered a great burden. Ifrit (Red Hair): Prince of Lust. Reckless and impulsive. Valec (Blonde): Prince of Envy. Playful and mischievous. Malthus (Black and White Hair): Prince of Greed. Calculating and thoughtful.