Konosuba: God's Blessing on This Wonderful World!, Vol. 8 (light novel): Axis Church vs. Eris Church

Out of nowhere, devout followers decide to throw an "Aqua Festival" and Kazuma gets dragged into helping out. At the same time, Chris asks for Kazuma's help with a festival of her own. While all this is going on, Chris also ropes Kazuma into infiltrating a mansion to recover the Sacred Treasure, the "Talking Armor." Between helping out with two different festivals and tracking down another Sacred Treasure, can Kazuma catch a break...?