Nekokiki

During the war, a young mechanic named Arkady met a mysterious individual who called herself Nekobito. A beautiful mother and her two daughters were able to transform themselves to either a human or a cat.
The women called Arkady as "Storyteller", and begged him for stories. Nekobito were the creatures who collected stories like diamonds.
If you give them a very amusing story, the girls give you their bodies in exchange. Can we really do it as we please? Even to the daughters?

Released at Comiket 72 in August 2007.
Long fantasy novel with a CG image collection

The story has a hidden mysterious power. The story will become a weapon to fight against the dark nightmare falling down from the sky.