侦探已死

你来做我的助手吧。” 　　有着被卷入事件体质的少年・君冢君彦，在高空一万米的飞机中成为了自称是侦探的天使般的美丽少女・希耶丝塔的助手。两个人为了同世界各地的敌人战斗，三年来在世界各地飞来飞去，展开了令人目眩的冒险旅程。——不久之后，侦探就去世了。 　　动荡的日子已经过去了一年。已成为高中三年级学生的君冢也沉溺在了名为日常的温水中，过着极其普通的学生生活。在这样的君冢身边出现了一个委托人。 　　“你是名侦探？” 　　以和同年级的少女夏凪渚相遇为契机，连接过去和现在的壮大故事再次开始了——Kimizuka Kimihiko is a crisis-magnet. From getting caught up in a crime scene to accidentally witnessing a drug deal, trouble seems to find him around every corner. So it is no surprise when his rather mundane flight suddenly enters a state of emergency with a dire need of a detective onboard. Unfortunately, his attempt at avoiding trouble is foiled by a beautiful girl with silver hair who goes by the codename Siesta. Declaring herself a detective, she unceremoniously drags Kimizuka into the case as her assistant. That incident spelled the beginning of an adventure around the globe that went beyond his wildest imagination. Putting their lives on the line, the two took down criminal organizations, prevented disasters, and saved thousands. But the curtain closed to their epic journey with Siesta's untimely death three years later. Resolving to live an ordinary high school life this time, Kimizuka spends a year maintaining a low profile. However, as fate would have it, a girl with an uncanny resemblance to Siesta comes crashing into his life, threatening to throw his peaceful days into disarray.