Everyone around Futaba expects her to grow up and become an adult, and she's lost the ability to keep herself mentally balanced. At the bottom of her heart, her childish self is still there, and still strong. One day she wanders into another dimension, a world where the light has been lost, and darkness rules. The people there exist as babies wearing only their underpants...
He is the only source of light that 
can shine on its own in this world.
Er ist die einzige Lichtquelle,
die in dieser Welt leuchten kann.
Es la única fuente de luz que brilla
por sí misma en el mundo
Es la única fuente de luz que brilla
por sí misma en el mundo.
C’est la seule source de lumière
qui peut s’illuminer d’elle-même !
È l'unica fonte di luce che può brillare
in autonomia in questo mondo.
Ele é a única fonte de luz que
pode brilhar sozinha neste mundo.
Лишь он один может 
производить свет самостоятельно!