Touya Mochizuki was struck by lightning when he was going home from school. He died when he was 15 years old. Feeling no resentment about the accident, Touya forgave God. However, Touya's courteous act was only made God feeling more guilty. For atoning his mistake, God would revived him to another world and gave Touya a favor. The favor was that Touya could brought one thing that he wished from his past world. After some thought, Touya chose his smartphone. God approved Touya's wish and also gave his smartphone extended abilities and limitation. Before sending him to the another world, God also raised Touya's basic and physical abilities.
Touya Mochizuki died after accidentally struck by World God's lightning when he went home from school when he was 15 years old.
Gods are forbidden to resurrect anyone to the same world.
The World God increased Touya's over all abilities before he send Touya to the world.