By the Grace of the Gods: Volume 5 (novel)

Thanks to the windfall from his first solo adventure, Ryoma's able to open a second slime laundromat. Once back home in Gimul, Eliaria sends him a letter to inform him of the city's upcoming Founding Festival. Follow along with Ryoma, as he sets out to open a stall at the festival to sell foreign food and unique drinks! But will everything go to plan, or will trouble find Ryoma once more?