Lily

After the human started to hunt down demons, the remaining succubi founded a place for themselves and there they lured men, safely draining them off their vitality to their heart's content. This is a land where they can live in peace, it is the demon town of Cornelica. Lily is a little succubus who lives in Cornelica and she's also a friend of Al, a boy who ended up in Cornelica after an unexpected turn of events. She helped him living in Cornelica since then.