Otto’s Armor System

After Xuanyuan Yu’s accidental death, he accidentally activated the armor system and became the master of the armor.

They traveled through various worlds.

In the hyper-ancient times of the Diga World, the four dark people were adopted.

In the world of opu, he was Red Armor, a senior whom Gagula respected.

The Country of Light in the Shōwa universe treated him as a distinguished guest, the mysterious four abstruse mysteries addressed him as lord, and the racing rabbit acknowledged him as his master.

As he traveled through the various worlds, he discovered that his background was not simple.