Her son, Mokoyoshi, has recently become obsessed with "cooking", and Kumi was happy to see Mokoyoshi, who had never been interested in anything until now, earnestly gripping a frying pan. However, there is one problem... Mokoyoshi uses a large amount of "olive oil" for cooking, which puts pressure on the household budget. Kumi complains about the clearly outrageous consumption of olive oil, but... One day, Kumi carelessly spilled olive oil on her big butt!
