消极的快乐，电锯的边缘

山本阳介（市原隼人 饰）是一个平凡的高中生，一天深夜，他偶然目睹了一名美丽少女正在和一个手持电锯的狂徒展开激烈的斗争，尽管少女准确无误地攻击到了电锯狂徒的心脏，但狂徒依然逃走了。少女飒爽的英姿吸引了阳介的注意，他瞬间坠入了情网，决定要成为少女的保护者。 　　少女名叫雪崎绘理（关惠美 饰），然而，就连她自己也不知道自己为何要同电锯男彻夜战斗，唯一有价值的线索是，这个电锯男拥有着能够毁灭世界的可怕力量。就这样，阳介加入了深夜的战斗之中，和绘理共同经历了种种关乎生死的紧要时刻，两人之间的感情也因此而开始缓慢升温。Yosuke, a typical slacker kid dozing his way through school, showing nothing in the way of ambition as he quietly mulls over the death of a close friend the year before. He is clever enough and full of smart comments but just doesn't seem to see the point of much in life. That changes when he meets Eri by chance, late one night. She is a beautiful young girl, herself nursing a tragic loss, and for Yosuke it is love at first sight. So what to do when a giant falls from the sky, determined to do battle with Eri (the young girl armed with a brace of hidden knives, as this is obviously a regular occurrence)? Yosuke finds his purpose-he must help the girl he loves, never mind the fact that she is far stronger and better equipped for this battle than he.