八坂真寻（喜多村英梨 配音）是一位纯真平凡的高中男生，某日，他在路上意外地遭遇到了不明生物的袭击，就在这生死生死的危机时刻，一位银发少女从天而降，胜利掩护了真寻的性命少女名叫奈亚子（阿澄佳奈 配音），据说来自外星球，奈亚子告诉真寻，自己是邪神化身，此次来到地球，正是为了掩护真寻 &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp； &amp；amp；amp；amp；nbsp；就这样，奈亚子开始了和真寻同进同出的生活外表冷漠个性糟糕的失常少女克子（松来未佑 配音）、个性怯弱害羞但拥有强年夜力量的莲太（钉宫理惠 配音），这些个性迥异的外星人们连续不断地涌现在了真寻的身边，平静的生活就此彻底与真寻无缘！