Hi! Thank you for your visit. I'm glad you enjoyed the burger :) Our customers' experience is the most important thing to us, so I wanted to take the chance to clear up any misunderstandings so we can ensure you and our other patrons have a great time dining with us. We definitely can swap vegan cheese for regular cheese (among other substitutions) at no additional charge. I checked your ticket and we didn't charge you extra for regular cheese. Our menu does list additional cheese for ¥125, but that is for customers who are looking to add more than what already comes on the burger. Our menu is very flexible and we hope to meet everyone's needs without any additional charges. Our vegan and vegetarian customers are our priority and we are firmly against the "vegan tax" that many restaurants impose for veg substitutions. This is our second week of business and we're listening and responding to our customer's needs. I'm sorry that your interaction with our staff felt deceptive—it has been addressed. You are correct that we were charging ¥100 (plus tax) for ketchup, but we have since changed this pricing and now offer ketchup, mustard, and bottled hot sauce at no additional charge. Because of the feedback of customers like you we can better serve our community, so thank you for that. We feel our prices are in line with other non-fast food burger shops in the area, but we do offer burgers as low as ¥500 (+ tax) to cater to customers of all budgets. All of our burgers can be made vegan/vegetarian at no additional charge. Our fries are hand-cut and prepared in house which is extremely rare in Japan. The majority of our products, including our vegan patties, pickles, sauces, and vegan ice cream are made on-site and we try our best to keep prices reasonable despite high food cost. Thank you again for your feedback as it's already making us a better restaurant for our customers. I'd love to invite you back so I can make up the ketchup charge for you and offer you a burger on me for your helpful feedback and criticism. Feel free to get in touch!