Momo Ayase is a girl who meets her classmate Ken Takakura. Their unusual friendship will face them to aliens and ghosts in a series of dark and funny adventures.

For the first time ever, Uta - the most beloved singer in the world - will reveal herself to the world at a live concert. The voice that the whole world has been waiting for is about to resound.

The story of the titular girl known only as "Otome" and her insanely long night of partying and drinking-complete with a book fair, festival, and many adventures in between. It is also the story of "Senpai," her upper class man who has been...