Me and the Alien Mumu Vol 2

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. Turns out having a cat-shaped alien roommate leads to all sorts of interesting discoveries. From 5G to choosing the perfect rice cooker, Sakurako and her new alien roommate learn some surprising how-to tips about home appliances!

Source: Kodama Tales