Konosuba: God's Blessing on This Wonderful World!, Vol. 6

Kazuma finds himself yearning for a little sister as he spends his downtime with his party. His fortunes change when he attends a royal banquet and meets the charming Princess Iris, who quickly becomes fascinated by his adventurous stories. Transported to the royal castle, Kazuma discovers a life filled with excitement and wonder. However, when whispers of a "righteous thief" begin to circulate in the capital, he decides to take matters into his own hands and set out to catch the elusive figure.