There were a number of animals that lived in the grassland. Though it wasn’t like a flood of animals attacking them, there were plenty of grasshoppers and frogs living in the grass, dragonflies, bees, and butterflies flying around, and birds and bats in the air overhead. When any of them noticed the pair walking by, they’d immediately attack.

“We’re done for if they even touch us, right?” Tomochika’s expression grew stiff as she considered what would happen if Yogiri wasn’t there. No matter how athletic she was, avoiding every single thing that was attacking them would be impossible.

...

“This place is awful. I can’t imagine normal people being able to survive here,” Yogiri said, picking up a dead grasshopper from where it lay on the road.

“Hey! Are you sure it’s safe to touch those?!”

“It’s dead, so it’s fine.” He looked at the insect from a number of angles, but it appeared to be nothing more than an ordinary grasshopper. There were no obvious indications that it had been infected by the Seyla. “I guess the only difference is that it attacks people.”

-Volume 10 page 104