Tetsuya Takahashi was suddenly summoned to another world. However, his invocation was a mistake and after participating in the level review… He had the weakest max level, Level 1. The king, seeing his limit called him “defective” and condemned him to death! Despite being summoned against his will. Tetsuya was thrown into the valley of the monsters. There he was attacked and brought to the brink of death, and when he used his unique skill [Corpse Absorption], he gained the skills that the corpse possessed! “…Let’s do it! Survive in this world, become strong and take revenge on those who were summoned. The “level 1” man who was called “defective” and “weak”… Now begins the ascent to be the strongest!