Ultra: The Tiga stone statue was destroyed at the beginning

Description

Traveling to the world of Tiga, I was given a system at the beginning, but the system brought a big trouble.
In order to complete the system's tasks, Ishikawa Akira used the novice reward to come to the top of the Warriors, hoping to be recognized by the Ultra Black Factory, but he did not expect the Circle of Light to reject him.
After returning to Earth, Tiga was also killed by him unexpectedly.
So, who will save the earth?