Eight years prior to the story, explosions caused by scientists at the foot of Mt. Asama caused a meltdown of Getter Ray energy that spread throughout all of Japan. People throughout the world began to exper...

Original work on Pixiv

He shall call forth the bone dragon! Summon the lich and the grim reaper! Li Jiayu, the dark summoner, has been reborn and everything returned to the moment before the outbreak of the devastating apocalypse....