Spirit Blossom is a series of skins in League of Legends. A fictional universe from the Runeterra Prime stories told during the Ionian Spirit Blossom festivals, as well as a possible afterlife in the Ionian myths. Champions represent the characters from those stories. The Spirit Blossom Festival is an ancient and celebrated time in Ionia, when the door to the spirit world is opened, the dead return to their loved ones, and spirits of all manner turn their eyes towards the living. From the benevolent Kanmei, to the obsessive Akana—their stories play out again and again, like shadows on a paper lantern.

Twin spirits herald the day's end in one version of an old Ionian tale. They are brother Midnight and sister Moonlight, two sides of a heavenly coin. Night breaks beneath the brother's shroud, cast across the firmament, a pitch-black canvas upon which his luminous sister dances as she trails a veil of stars.