Yui is trapped in the abandoned supply base, and the BETA have broken through the defense lines.  With no hope of escape, she attempts to destroy the prototype cannon to keep it from falling into the wrong hands...
The military always prioritizes 
keeping its officers alive,
¡Darle preferencia al bienestar de los 
comandantes es lo lógico en un ejército!
¡Darle preferencia al bienestar de los 
comandantes es lo lógico en un ejército!