50 Seconds of Immortality

Fight for humanity and the entire galaxy, even if you know you are insignificant compared to higher-dimensional creatures. I mistakenly entered the fourth dimension, and the fourth-dimensional people wanted to make the solar system two-dimensional. I tried my best to stop it, but to no avail. The fifth-dimensional space suddenly inserted, flattening a corner of the four-dimensional space, and brought me to the fifth-dimensional space. Little do they know that another rapidly developing parallel universe in the fifth dimension is about to move... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.