arurū is erurū's shy, quiet younger sister, and a friend to yuzuha and camyu. like erurū, she is also named after a fictional flower. it is said that the erurū and arurū flowers grow together. when she first meets hakuowlo, she is shy and reticent, running and hiding from hakuowlo whenever she encounters him and speaking very little. hakuowlo eventually wins over arurū's affections, and she starts calling him . how hakuowlo does so depends on whether one is playing the game or watching the anime. in the game, arurū warms up to hakuowlo after he shares some freshly harvested honeycomb with her. in the anime, hakuowlo wins over arurū by sparing the life of a baby white tiger, even though its mother, mutikapa, a large white tiger with special traits, had killed many innocent people (and despite the fact that almost all the villagers wanted the baby tiger killed; they were, however, willing to defer to hakuowlo's judgment since his plan had saved their lives). regardless, in both the game and the anime, arurū raises the baby tiger, naming it mukkuru. after it grows (in an astoundingly short period of time), she rides him into battle, often in spite of orders or warnings to stay away from danger. this results in her being heavily wounded and presumably dying while trying to protect hakuowlo from hauenka, and she is revived by hakuowlo/uitsalnemetea. it is later revealed that arurū had been severely injured in an earthquake prior to meeting hakuowlo and that eruru was unable to do anything for her. uitsalnemetea happened to be passing by and healed her in exchange of eruru's body, heart and soul.