The soldier commander has a secret. He can travel through time and space. In addition to having an identity as a soldier commander in this dangerous world overrun by giants, he also has an identity in another "peaceful" world. He also has a home and an old father at home. Oh, by the way, he also has a tattoo space that can bring things from the two worlds.
However, one day, his old father accidentally entered his dimension, and accidentally came to the giant world. What was even more accidental was that his old father lost...
Purpose: Caring for the soldier commander and giving him a home