"Project Boobs" is a comedic and lighthearted anime series centered around a group of high school students who form an unconventional club dedicated to creating the ultimate "boob pillow." The story begins when the protagonist, Haruto, a shy and reserved student, stumbles upon a flyer for the "Boob Pillow Research Club." Intrigued, he joins the club, which is led by the eccentric and enthusiastic club president, Rina. The club's mission is to design and produce a pillow that perfectly replicates the comfort and feel of a human chest, aiming to bring relaxation and happiness to people worldwide.

The narrative unfolds through a series of episodic adventures as the club members work together to achieve their goal. Each member brings unique skills and quirks to the table: Haruto provides the technical know-how for crafting the pillows, Rina contributes her boundless energy and leadership, while other members, such as the artistic Yui and the analytical Kenji, add their expertise to the project. Along the way, the group faces various challenges, including school regulations, rival clubs, and their own personal insecurities, all while navigating the humorous and often absurd situations that arise from their unusual endeavor.

The series balances its comedic tone with moments of character development, exploring the friendships and dynamics within the club. Themes of creativity, teamwork, and perseverance are woven into the story as the characters grow closer and learn to embrace their individuality. While the premise is undeniably quirky, the anime maintains a light-hearted and accessible approach, appealing to viewers who enjoy slice-of-life comedies with a unique twist. The plot progresses through a mix of club activities, school events, and personal interactions, culminating in the club's final presentation of their boob pillow prototype at the school festival, where they hope to gain recognition and support for their project.