So i have been looking for 3 years now trying to find an anime i watched. The anime followed a male teenager who walked into a temporary rift to a destruct version of his world full of monsters. I. Thus world he finds other teens fighting the monsters with unknown weapons. During the time he hears a voice call to him and it ends up being a suit that has sentience. The other teens tell him not to free it but he did anyway and the suit fused with him. He became a part of the group of teena fighting the monsters. In the end of the anime the gut with the suit try and save a shrine maiden from sacrificing herself to close the gates between the two versions of the world. Instead the guy with the suit sacrifices himself. The suit who was supposedly evil sacrifices itself freeing the boy and the world. That is all i can remember. I really want to watch it again. If you can find or already know the name please let me know. My Instagram is karma_beasley Thanks to all