Tasked by the Demon Lord to “win the Hero’s trust,” he ruthlessly takes down even his own demon forces, believing “to fool your enemy, you must first fool your friends.” But for Nanami, the female Hero whose extraordinary abilities have kept her from a normal life, Viper doesn’t just earn her trust—he captures her heart! […]

Tasked by the Demon Lord to "win the Hero's trust," he ruthlessly takes down even his own demon forces, believing "to fool your enemy, you must first fool your friends." But for Nanami, the female Hero whose extraordinary abilities have kept her from a normal life, Viper doesn't just earn her trust—he captures her heart!

---

勇者パーティに潜入した魔王軍の凄腕暗殺者『隠密のヴァイパー』。「勇者の信頼を勝ち取れ」という魔王の命令を完遂する為に、時に魔王軍相手ですら「敵を欺くにはまず味方から」と次々と撃破する‼そして勇者の適性を見出されてフツーの女の子の生活とは程遠い生き方をしてきた女勇者のナナミからは、信頼どころか恋愛の対象になってしまい…⁉加減を知らない暗殺者と彼に恋する女勇者による、風変わりな異世界ファンタジー‼