Peddler in Another World: I Can Go Back to My World Whenever I Want! (Manga): Volume 5 oleh Hiiro Shimotsuki

Can the attractive young witch accosting Shiro at Ninoritch’s harvest festival really be his long-lost grandmother? A quick teleportation spell whisks her and Shiro back to his house in Japan, lending credence to the witch’s claims. But plenty of questions remain, like: Why did she disappear without a word in the first place? Why does she throw double peace signs all the time? And why does Shiro’s wizened, old, granny-shirt-wearing grandma look significantly younger than the last time he saw her? However, Shiro doesn’t have time to sit around reminiscing with his grandma, because the beautiful mayor of Ninoritch, Karen, is in the middle of a crisis. The earl of the region has invited her to a lavish banquet in the capital, but she has nothing to wear! Determined to help, Shiro offers to find her a dress and promises to make her the belle of the ball. But what does Shiro know about fashion in the other world?