Saikano 3 features story and art by Shin Takahashi.

Shy Chise and nervous Shuji are high school seniors in a small town and have just started dating. But everything changes when Shuji discovers that Chise has been engineered by the Japanese government to transform into the Ultimate Weapon! What do you do when the girl you love becomes a weapon of mass destruction?

When Chise chooses to meet Shuji for a date instead of going on a combat mission, her decision has calamitous consequences. While waiting at their rendezvous spot, Chise is shocked to find out Shuji's been with his former girlfriend!