The Demon Lord's Daughter Visits a House. Episode 7

Fino and Raul alongside with Lore-senpai (the girl who works with machines and such)all go to repair someones magic machine which is what households run on if you have no magic. The machine doesn't have energy due to a monster or magic sucker you could say, that eats up magic. They fix it, and on they move on. There's an old lady who bought an air conditioner at Leon shop because she didn't like the way they treated her at the new magic shop, but when Fino, Raul, and Lore-senpai arrive to the house to install the A/C, the new magic shop company is also there to install an A/C. A feud comes along about which company to choose who will install the machine or not, but as they will install it, there's something that's been eating all the magic in the house. Lore-senpai gets an idea on how to remove them all, and Fino helps. Because of their help, the owner of the house, son of the old lady, chooses Leon Shop to install instead of the new company.