Omniform in Overlord

The cover art does not belong to me, but it did not have any credits when I found it, if it belongs to you and you wish for me to remove it please contact me. A young man dies in an unfortunate school shooting, and is given the chance to reincarnate into another world by a god, with only one wish, the main character chooses to be reincarnated into the world of overlord with the mind of a matryoshka brain. follow the main character as he struggles to survive in the dystopia of the overlord world until he can travel to the new world. R18 due to talk of rape, murder, suicide, and other touchy subjects, however there will be no lemons. sorry.