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By Black Clover Mangaka "TABATA Yuuki",totally unrelated to black clover
Follows the adventures of a scientist Haiji and his assistant Chitose. One day the doctor is called to resolve a mystery about a glowing corpse. From the will of an unknown power the corpse then transforms into a monster and Haiji has to defeat it, to learn all about a mysterious black apple which can regenerate itself and which when eaten will enable someone to control gravity...