花町市花间学园是一所混乱不堪校风很差，与上流贵族学校呈鲜明对比的学校。经常发生校园暴力事件，管理松懈，学生为所欲为。在学校中分为对立的两个派系：N神部：不插手一切势力纷争，除了隐线部长夏寒洛是本校学生之外，其他部员均分布在本市各个学校中，且具体人数和资料不详。是一个特殊的组织，在校园内接各种委托任务，但前提是不违法，不违背道义，视委托人情况收取报酬。但只要是针对花美部的调查和解决事件，都会爽快地接受。因此和花美部有势不两立的势头。花美部：聚集在校园内的一个强大势力团队，经常得到学校的许多偏袒和支持，横行霸道。因为部长和副部长全都是代理校长的亲属，所以成员的行为非常霸道。有一个幕后的部长，但是没有人知道其真实的身份。(Garden School in Huating City features bad spirit and utter disorder, significantly contrary to the noble school. The school is known for the frequent violence, bad management and students' arbitrariness. The school has two factions: N God Department: They do not care about any dispute. Except its head, Xia Hanluo who is the student of Garden School, the other members are from the other schools of the city. The specific population and information of the members are not known. It is also a special organization as it only accepts legal and moral assignments with proper reward. However, all the investigations and events related to the Beauty Department will be accepted without any hesitation, meaning that it is extremely antagonistic to the Beauty Department. Beauty Department: The team gathering in the campus are very strong and often tyrannize under the support of the school, since the head and depity head are the relatives of acting president of the school. The department has another head behind the screen, who is not known to the public.)