Kashimashi

is a Japanese manga series written by Satoru Akahori, with illustrations by Yukimura Katsura. The series began publication on May 21, 2004 by ASCII Media Works in their Dengeki Daioh magazine under their Dengeki Comics publishing imprint.

A Light Novel of the series was released in January 2006 by ASCII Media Works under their Dengeki Bunko Imprint. It was written by Mako Komao and illustrated by Yukimura Katsura.

The Manga has been licensed for an english release by Seven Seas Entertainment.

Synopsis
The main character, Kana Ueda, confessed with the encouragement of her childhood friend, Tomari Kurusu, to her unrequited love, Yasuna Kamizumi, but her confession was rejected. He was trying to heal his wounds by climbing Mt. Kasumi in the neighborhood, but he was caught up in the crash of a huge spaceship.

Spacecraft was riding to the alien is, apologize for their mistakes against earthlings, stating that treated the bouncing. However, at the same time, he also tells that he has become a woman in the process of treatment. And this change can no longer be corrected.

It seems that she will go to school as a woman, but Yasuna, who should have refused to confess once, will actively approach her. And Tomari also notices the true feelings he had for the moment he thought he was his younger brother when he saw them.

This is how the strange love triangle of the three girls began.