Nariyuki Yuiga comes from an impoverished family, so he's eager to secure a full scholarship to college before he graduates high school. His principal agrees, with one stipulation--he must tutor three of the most talented girls at school and make sure they get into their target colleges!

Although the main college entrance exam is finally done, a beleaguered Nariyuki Yuiga must now focus on the secondary exams. But sometimes students need a break from the constant grind of studying. Besides, it's Valentine's Day, and the girls are determined to make Nariyuki some chocolates he will never forget...