The third volume of The Wallflower was originally serialized in Bessatsu Friend in 2001 by Kodansha Comics and later published as a volume by the same company on July 11, 2001. The English version was released on August 21, 2012 by Kodansha USA.
- "A fabulous foursome of gorgeous guys may live in a magnificent mansion for free, but only if they can turn Sunako, the horror-movie-obsessed, fashion-illiterate niece of the owner, into a proper lady. Oh, and did the aunt mention that Sunako needs to get good grades, too? Sunako must achieve an average above 80 percent, or the deal's off. No problem! Sunako scores high in all subjects-except math, which she consistently fails miserably. Now the guys have to tutor their reluctant student through hours of course work, avoiding the pitfalls of her gruesome hobbies, explosive nosebleeds, and tendency to faint whenever anybody refers to her kiss with Kyohei. Math would be easier without so much division! This volume of The Wallflower inludes special extras after the story!"
- Chapter 10: "Blood-Splatteringly Steamy Love at the Hot Springs (Part 2)"
- Chapter 11: "Who's the Real Enemy... Kyohei or the Test?"
- Chapter 12: "The Girl in the Storm"
- Chapter 13: "Beautiful Party People"
- Chapter 14: "I Am Number One!"