Its probably more a simple homage to his work seeing as the entire design for Mystia's grill and work clothes are lifted from his work. Putting his name in is just a way to acknowledge that.
Yes, Mystia's alternate outfit and job occupation was certainly not the invention of Mitsumoto, but he definitely spearheaded the Mystia/Mokou relationship by using that occupation as a means.
MitsumotoMarisa's Written Challenge ☆ 3Welcome!Ya-ya-.Firstly,Remove the liver and backbone.Oooh~.Nice to meet you.I'll rely on you for the experiment.stock up and prepare the ingredients.What happens if a normally lazy person goes to the place of a hardworking person?It's also a wish from a certain pharmacist.After that, prepare to open the shop.And then go to the village and other places to get customers.Serve the customers after opening...