ゆい

Yui is a protective household deity ([url=http://ja.wikipedia.org/wiki/%E5%BA%A7%E6%95%B7%E7%AB%A5%E5%AD%90]座敷童 or 座敷童子[/url]) who reaches puberty as she falls from the roof of an old schoolhouse right in the arms of the protagonist. In her innocence she clings to the protagonist at once. [spoiler]In True Story her name changes from ゆい to her real name 結.[/spoiler]