text: A visitor to this place is given a box containing his old age, which he is told never to open, and travels forward 300 years in time when he departs this place.
full_question: A visitor to this place is given a box containing his old age, which he is told never to open, and travels forward 300 years in time when he departs this place. Hoori (HO-oh-ree) marries this realm's princess Otohime, the daughter of its ruler Watatsumi. After traversing this location, the Hare of Inaba is skinned by angry wanizame. A god of this place puts his son-in-law Okuninushi through a series of tests, and earlier transforms a young girl into a comb in order to slay the eight- (*) headed serpent Yamato-no-Orochi. That god of this place tosses a flayed horse at his sister, who flees into a cave. The nose of Izanagi produces a god of storms and this realm who is the brother of Tsukiyomi and Amaterasu. For 10 points, identify this domain ruled by Susanoo.
first_sentence: A visitor to this place is given a box containing his old age, which he is told never to open, and travels forward 300 years in time when he departs this place.
raw_answer: the ocean [or the bottom of the sea; the seas; or underwater; or underwater palace; or dragon palace; or umi; or Ryugu-jo; or obvious equivalents; prompt on water; prompt on palace; do not accept "rivers"]