Humans do not understand the feelings of standard products. Sirocco's screams reach other stars. How many times should we die--! ??

An era when excellent clones called sirocco are mass-produced. The sirocco and others were active in various parts of the universe as a perfect standard product by synchronizing the knowledge and experience gained by each with the nearby sirocco. However, many of them eventually commit suicide. The sirocco and others shared knowledge as well as the darkness of their hearts ...