War looms over the capital, and Koushi's work with for Yuoshichi Okibi is coming to a head. On the eve of their new weapon's final test, two unexpected visitors complicate the situation. Who can Koushi trust, and what does he truly want to accomplish?

Koushi struggles to load and operate the Lightning Cannon, but both the gods and the spiders have other ideas. Meanwhile, a chance encounter leads Touko to witness a startling scene.