Konosuba: Even More Explosions on This Wonderful World!, Vol. 1 (manga)

“Seeking thieves—only those with determination and the willingness to do crime in the name of justice need apply.” Megumin’s adventures continue! She’s been living a peaceful life in Axel since forming a party with Kazuma and the others, but one night, she witnesses the wonderful work of a certain thief gang. Entranced by their coolness, she (without consulting them) decides to help them out…by starting her very own thief gang?! She’ll need to gather an elite force if she’s going to punish any corrupt nobles, but all the adventurers in Axel already know just how weird Megumin can be…