Azumi Ryou

Leon Schwarts is a simple sailor, enjoying his time at sea and his breaks on land, while doing his best to avoid sleeping and the nightmares that haunt him. During a trip to London, Leon's boat runs across what seems to be a deserted ship, only to find a single survivor, the beautiful girl Lapis. However, Lapis has secrets of her own that she is willing to go to extreme lengths to keep. This meeting starts a string of events that changes Leon's life forever... (from mangaupdates)

Manga adaptation of Wagner's opera The Ring of the Nibelung It is said that if one wears the ring made out of gold taken from the river of Rhine, one can rule the world. Only those who abandoned the joy of love can obtain the power to make the ring. Alberich who was reviled by the fairies of Rhine, cursed love itself and made the ring.