“万界之癌”在诸界蔓延之时，名为“裂界”的侵蚀现象也在悄然滋生。博识学会认为两者之间存在因果关系，即“裂界”由“星核”催生，将接触到的事物与空间转变为特殊的裂界造物。造物普遍以侵蚀的形式存在，它似乎保有原型的记忆与习惯，但外在表现上则大相径庭，往往表达出强烈的排他性。研究裂界的学者警告称：被裂界侵蚀的物件与其原型应当视为毫无关联的两种存在，对其抱有的一切幻想皆会引致严重的后果。
除侵蚀以外，“裂界”还会记录被裂界接触事物的以太信息，与裂界本身保存的数据混合，产出一种经过嫁接的裂界造物。在每个被万界之癌侵蚀的世界里，无数遗器、裂界怪物、甚至被神秘分隔的异空间诞生在各个角落，人们仍在研究这一举动背后的目的。
Fragmentum (Phenomenon)
As the Cancer of All Worlds spreads along the worlds, the corrosive phenomenon of Fragmentum is also quietly expanding. The Intelligentsia Guild believes there is a direct, causative relationship between the two phenomena. They believe that the Fragmentum is caused by the Stellaron, and converts the entities and spaces it touches into special Fragmentum creations. These creations usually exist as a type of spatial corrosion. They seem to preserve the memories and habits of the original physical entity, but manifest significantly different outward behaviors and are often very hostile towards other beings. The scholars researching Fragmentum warn that we should consider any being corroded by Fragmentum to be a completely unrelated existence to its original form. Harboring any kind of delusions towards it could cause grave consequences.
Apart from corrosion, the Fragmentum also records the Aether information of the entities and spaces touched by the Fragmentum. Such data is combined with the information inherent in the Fragmentum and develop into a type of hybrid Fragmentum creation. Countless Relics, Fragmentum monsters, and even mysteriously isolated paranormal spaces would spring up in every corner of the worlds corroded by the Cancer of All Worlds. We are still investigating the intent behind such activities.
