Saishuu Heiki Kanojo Japan

Saikano: The Last Love Song on This Little Planet. (Saishuu Heiki Kanojo, lit. She, the Ultimate Weapon) is a manga, anime, and OVA series by Shin Takahashi, creator of Iihito and Kimi no Kakera. Saikano was originally serialized in Shogakukan's Big Comic Spirits magazine.