A second-year middle-school boy acquires Yurika, a life-sized love doll, as his own special doll. Drawn to her innocent beauty, he wants Yurika to know him and the world he lives in, but their story begins to be encroached upon by reality. This novel portrays a boy's dark impulses and awakening sexuality.

Reality quietly enters the story shared by a boy and Yurika, his life-sized doll.

Set in a fictional town watched over by a radio tower, the story quietly unfolds across more than a century, guided by the gleam of lapis lazuli.

Guided by the gleam of lapis lazuli, the story quietly unfolds.