Me and the Alien Mumu Vol 4

From the Kodama Tales edition

Earth has been invaded by a cat-shaped alien. His target? Your appliances. Hiroki Miyashita mixes feline mischief, college comedy, and real-world science in a manga that makes everyday technology anything but ordinary. Come for the cat-shaped chaos. Stay to discover what actually happens inside the machines you use every day. From being able to spot the perfect high-end toaster in a toaster battle royale, to learning how to captivate toddlers with new, high-tech fairy tales, Sakurako and Mumu continue their journey toward becoming electronics experts and saving Earth!

Source: Kodama Tales