Konosuba: God's Blessing on This Wonderful World!, Vol. 15 (manga)

"Thanks to Kazuma's moneymaking scheme, what started as a collaboration between Eris's and Aqua's followers has developed into an Axis Church takeover! Kazuma wants to believe Aqua hasn't completely given up on being a kind, decent person, but the mounting evidence to the contrary is really testing his faith... To make matters worse, he can't even enjoy his festival date with Megumin, as a swarm of insects suddenly attacks, demanding his immediate attention! Will he be able to get the festivities back on track, or is his big festival about to turn into a big flop?"--Provided by publisher.