My Ability Can Be Infinitely Reborn

Am I actually a pure-blood human? On the way home from the convenience store, a boy was suddenly summoned to the world. In a new world where he could not rely on anything, the only power in the hands of the powerless boy was... The power called "die and start again". In order to change the established ending and protect those important people, the boy resisted despair and faced the cruel fate bravely.