Senpai! There's an Evil God's Shadow in Your Stockings

Just like so many anime protagonists, when I was climbing the stairs to the pedestrian overpass, a girl accidentally fell and knocked me down, burying my head beneath her skirt. Her silky black stockings rubbed against my face, but in the shadow of that absolute territory, I glimpsed the shadow of an evil god. From then on, my life spiraled out of control...