What happens when All Purpose Cultural Cat Girl Nuku Nuku leaves Nerima for Graviton City?

Some swearing, nudity, and naughty tentacles; it's not hentai but it is suggestive.

A young scientist, down on his luck from a lost love, decides to bust through the fouth wall by building what he calls "The Crosser", a device that allows him to cross the dimensional boundary. He crosses into the world of A-ko, B-ko, and C-ko, and hilar