When Ai Nakahara first met her upperclassman, Michiru Kurosawa, she was already terrified by the latter's impressive fighting skills. There are also all kinds of weird rumours floating around the school about Michiru or (as Ai's classmates refer to her) 'Miru-senpai', one of those rumours being t...

For seventeen years, twin siblings Alvaro and Alika have lived a more or less normal life. That all changes when Alika suddenly goes missing. Moreover, no one else but Alvaro seems to remember her existence. He then finds out that out of all the people in the world, the only one who remembers Ali...