Akira isn't the best student in the world, but he always manages to scrape by - until he gets his fifth F of the year. Now he'll flunk out unless he can ace his math makeup exam. The problem is, Akira is hopeless with numbers. Luckily, math wiz Yurika and her cute sister, Anju, offer to help Akira study. For motivation, the girls give Akira positive reinforcement every time he gets a problem right.
The rewards start out small, but soon he has the girls feeding him cake, changing into their swimsuits, and hugging and squeezing him. With incentives like these, Akira could turn into the next Einstein.
Story and art by Hiroyuki Tamakoshi.