The Last Love Song on This Little Planet最終兵器彼女 ~ 外伝集 - 世界の果てには君と二人で; Saishuu Heiki Kanojo - Gaiden; Saishuu Heiki Kanojo ~ Gaiden Shuu ~ Sekai no Hate ni wa Kimi to Futari de (Filipino) Ang huling awitin ng pag-ibig dito sa ating munting daigdig.