The Dark Queen and I Strike Back

Suddenly transported to another world. Being called the "Suitable One," with the world's strongest power "Holy Sword." He thought he would use that power to make a great impact in this new world. However, in this alternate world there are "inhumans," monsters that oppress the lands. Questioning his own convictions, he asked, is this correct? Who should he use this power for? This is the beginning of an isekai battle fantasy! (Source: MU, edited)