So I'm a Spider, So What? Vol. 6 (manga)

A mystery man and a smart phone? Things are about to get interesting!
I'm continuing to level up and kick some monster booty into the next stratum! But there's more to this world than I thought...and it seems there are some big figures at play behind the scenes. Like this man, for example-he just popped up out of nowhere! And...what's this? Holy crap, a cell phone?! Maybe I'll finally be able to communicate with someone down here in this labyrinth, and start getting to the bottom of things!