January 1999: Meet Azaka Kokuto. She plans to win Mikiya over as her lover despite the presence of a dangerous woman named Shiki Ryogi. There is only one problem - Azaka is his sister. And another major problem - Shiki and Azaka are sent to a magic school to uncover the truth after a serious incident in that school and no one has some memory of what happened. If anything is true is that there are some "Fairies" involved and are not good fairies. Will this pair of girls get along and resolve this incident? 那棵黑色梧桐。继续来一句话总结每一章。这一章有些失望啊。毫无灵魂的抄作业还抄不好。@ 喜欢鲜花。Banality & Mediocrity。小小的失望。强强强~~~。原作党泪目（纯吐槽）。 1999年1月，黑桐鲜花所就读的高级女子中学——礼园出现了神秘的事件。一年四班的学生橘佳织在宿舍起火事件中身亡，随后，一年四班全体同学的生活改变了。每天活在痛苦与烦恼中的她们，收到了不明来源的信件。不安的情绪在礼园全体学生间蔓延。为了解决事件，两仪式假扮学生潜入礼园，与黑桐鲜花一同调查事件的原委。另一方面，黑桐干也在使用自己的方法追踪事件的真相。而事件的背后，似乎还有那个男人，魔术师荒耶宗莲的安排。 苍崎橙子之徒黑桐鲜花，拥有“直死之魔眼”的两仪式，魔术与战斗的交叉，礼园的秘密在她们面前展开。 日本同人小说最高境界《空之境界》全七章动画化，本作为第六章电影版。
