Character from Umamusume.
The fortune-telling horse girl with a really long name (and meant to be read as Machikane Fukukitaru), Matikanefukukitaru is obsessed about fortune and luck and collects a wild range of lucky charms. The other horse girls (and humans at times) often consult her with their luck as well. She often refers to a "Shiraoki-sama" as if they were a shinto deity (and indeed, a horse named Shiraoki is the RL horse's 5th generation mare line ancestor).
The following tags implicate this tag: matikanefukukitaru_(chance_encounters_can_be_a_blessing)_(umamusume) and matikanefukukitaru_(good_omen_first_storm)_(umamusume) (learn more).