Torikagosou no Kyou mo Nemutai Juunin-tachi

"Hotel Williams Child Bird", nicknamed <Birdcage Manor>, inhabiting in there are eccentric people who can't fit in the normal society.
A day-dreaming beautiful woman, a Gothic Lolita that's a grade school.er, a person in a cat's costume, the eerie old twins and an unidentifiable piercing cry that continues to resound.

In such <Birdcage Manor> one of the residents - Kizuna Etoh, in her 16th winter makes acquaintance with an Art collage student living on fifth floor like a hikikomori - Yusei Asai.
And then she is invited to a part-time job as a nude model for paintings.
In an disorderly atelier with a heavy scent of oil paints as she spends time together with Asai, she feels that to her that...