Plus-Sized Elf Ep 7 - F2F Transformation

Episode 7 Potatoes of Shame and the Titan's Fist
To celebrate her weight loss, Elfuda treats herself to French fries, only for her to be the burger restaurant's 10,000th customer, winning a year's supply of French fries as a prize. Much to Oga and Kuroeda's surprise, both Elfuda and Tomoatsu have gained an enormous amount of weight. Kuroeda detects a magical spell on the fries, leading the group to suspect that Satero is responsible for the weight gain, who later appears at Tomoatsu's apartment.