So I'm a Spider, So What?, Vol. 10 (light novel) by Okina Baba
I've finally figured out why I was reborn in this world. Still, that doesn't mean I'm gonna change how I live day to day right away. For now, what's most important to me is regaining my strength and gaining some new skills. That's why I sent out thousands of spiders all around the world to keep an eye on things. I have more talent for being a spy than I thought...