Aside from Ichika, there was another boy that can activate an IS. Although, this young man has something else in mind, specifically to get something important back. He might get something more than he asks for, but maybe he'll lose something else as well.

Remnant, a somewhat peaceful world full of creatures of darkness. Earth, a somewhat peaceful world full of many countries that might start a war with one another. Now what if these two worlds meet one another? Will it end in peace and friendship, or in blazing chaos? (RWBY x Rise of The Reds crossover)