In Another World With My Smartphone: Volume 13 by Patora Fuyuhara

It's time for the Duchy of Brunhild to host a national festival, and Mochizuki Touya is smack-bang in the middle. World leaders are in attendance, nobility, traveling adventurers... And even God himself has seen fit to grace the mortal realm with his presence. What will Touya do when the big man upstairs comes downstairs for a change? More importantly, will he have enough dessert?! Meanwhile, in the Reverse World, tragedy strikes... An unusual purple Gollem surfaces alongside a strange, depraved woman... Their actions paint an otherwise calm marketplace deep crimson... Put on your party hats for a tale of swords, sorcery, and tasty snacks!