Konosuba - God's Blessing on This Wonderful World! Vol 19

From the Yen Press edition

After challenging Prince Levy in an attempt to secure more funding for Belzerg’s defense, Kazuma and Iris are taking down everything he can throw at them! It’s hard to stop when they’re on such a roll, so the two continue to challenge him again and again, but is Levy really going to let them take him for all he’s worth?

Source: Yen Press