Kyrsta Alumini is a major character of the story, "Highschool DxD: King's Conquest," and the unofficial fiance of Noctis Chulainn Novumundus, the prince of the kingdom of Novumundus. Being the daughter of the Marquis of Alistar, she is a member of the nobility, and famed as the "Lightning Queen," due to her magical prowess and speed. It was also revealed by Myra that, unknown to either Krysta or Noctis, they are engaged by their parents, as the Marquis and the late Emperor were good friends, if on part with their wives.