This story begins when Hi-chan, Ayaka Takeuchi’s daughter, was only three years old and suddenly started to speak of a place beyond our world. A place she called "the World in the Sky," a realm she vividly described as part of her life before joining her family on Earth.
Her parents listened to her with a mix of amusement and disbelief. Yet, as Hi-chan's tales unfolded—talking of Ayaka’s past with uncanny familiarity and revealing knowledge far beyond a toddler’s grasp—their skepticism turned to awe...