After falling from the sky with no memories of his past, Yuuki forms an alliance with 3 new friends, and the hidden mysteries surrounding him and his allies begin to be revealed.

The series takes place in an unknown world, Yuuki is awakened by a mysterious Goddess only to find out that he is sent in another world to uncover the truth and return his memory. What secret is hidden from Yuuki and will he manage to return his memory?—Scientiiaa