As Devilstrider followed the Harpies, he realised after some distance that they were coming from atop a Skyscraper. He looked up and thought for a moment. Getting up there wasn't exacly easy. He did not possess flight. He did, however, have considerable strength and speed. Taking a step back, he rubbed at his ring. He was always nervous when he did this. He infused and sped forward, jumping and continuing his speed, it carried him up the building. Within a few seconds he was on top of it. 

Well. He was here. Time to figure out what was up.