Here we have A Man of Steel + Vampire
take on Kurumu Kurono’s Star Sapphire Power Ring.
It appears in the installment: Violet Queen + Vampire
Star Sapphire’s bio is here: Man of Steel + Vampire: Star Sapphire Kurumu
In the MOS+V Univerese, after leaving Oa, the Zamarons traveled the universe until they came to a planet they called Zamaron. Within the caves, they found a pair of corpses, a male and female, embracing each other. Between them was a violet crystal they called the Star Sapphire. The Zamarons concluded that the Star Sapphire was ultimate expression of love, and sought to emulate it. What they failed to fully realize was that the Sapphire was a parasite which suppressed its hosts. After eons, the Zamarons forced a teenage Kal-El (Clark Kent Superman) to choose which girl in his harem would be the Sapphire's host. Instead, Clark kissed Queen Aga’po, which the Sapphire immediately bonded to. As they tried to convince their queen to calm down, the Sapphire attacked them. Finally restraining her, the Zamarons returned to their world to try remove the Star Sapphire. however, the Sapphire possessed Aga’po manage to break free and went on a rampage on Zamaron, causing a teen Zamaron named Ghia’ta to journy to earth for Superman’s help in return of helping to revive a deceased Kurumu, who died shortly after he pulled the gem off of her (because a succubi survives on love and because since she was have a problem with their relationship it caused the succubus to be near death, but the gem’s power was keeping her alive). Once they journeyed to Zamaron, Superman attempted to purge the Star Sapphire from its host by convincing it that the "love" it felt for him was not mutual as the gem had been influenced by Kurumu’s succubus nature.
Remembering his first encounter with Kurumu for the first time, Clark began to realize that the Gem didn’t choose Kurumu because she was close to him but because she was in need of love most. He kisses her to make her feel loved so she can live again. The Star Sapphire (which was used as link between their hearts) used Clark and Kurumu’s Love to reconfigure itself into a new form – the Predator Entity.
The Zamarons had come to a bitter conclusion: the Star Sapphire was too unstable to be controlled on its own, so they attempted to capture Predator and seal the entity into the Violet Power Battery that they have built in order to ignite it. Before the Zamarons could lay claim to the Predator Entity, Kurumu stepped in and showed her disapproval of imprisoning the creature within the Central Power Battery. She highlighted the fact that the Lantern technology created by the Guardians of the Universe worked by tapping into the collective emotions felt by sentient beings; in this case it was the feelings of love made by sentients across the cosmos. She further explained that it was this that would power the Central Power Battery and believed that forcibly imprisoning the Predator would lead to its corruption of true love, and would make them no different from the guardians. Kurumu also commented on her own relationship with Clark and said that she did not believe true love was wrong. She further stated to the Zamarons that their own love should power the Star Sapphire Central Power Battery, but the Zamarons attempted to forcibly take the Predator Entity. Queen Aga'po, however, stopped her followers after hearing the Succubus's wisdom. She believed that Kurumu was the true keeper of love as she possessed the strength needed to tame the Predator Entity and intended for her to be the Torchbearer.
The Predator also saw this and not only created a Star Sapphire Ring and Power Battery for the succubus, but also took her as it’s host, and bestowing its power to Kurumu willingly which grants her nigh-omnipotent control over not only the violet wavelength of light but also over time, space and reality. Afterwards, the Zamaron’s chanted Kurumu Kurono's name as they hailed her the “torchbearer” and Queen of the Star Sapphires.
Superman is owned by Jerry Siegel, Joe Shuster, and DC Comics, and Warner Bros. the 2013 Man of Steel Movie is owned by Director Zack Snyder. Rosario+Vampire is owned by Akihisa Ikeda, Gonzo, and Funimation. Star Sapphire and Green Lantern are owned by Robert Kanigher, Lee Elias, John Broome, Gil Kane, Bill Finger, and Martin Nodell.Notice: Also I made another update to Man of Steel + Vampire: Star Sapphire. Kurumu. check it out.