Konosuba - God's Blessing on This Wonderful World! Vol 15

From the Yen Press edition

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?

Source: Yen Press