The Wakaba household is a chaotic whirlwind of whispered secrets and late-night debriefs. Under one roof, four sisters find themselves caught in the simultaneous pull of their first ever feelings, turning their quiet lives into a high-stakes manga. It’s not just one heart on the line; it’s a household-wide epidemic of blushing and stuttered greetings. From the eldest navigating professional boundaries at work to the youngest dealing with a middle school desk-mate, the air is thick with the suffocating tension of unrequited crushes. Every room serves as a war room where strategies for the perfect encounter are plotted over snacks, and every muffled phone call signals another development in their romantic awakening.

Kokoharu leads the charge as the eldest, trying to maintain her composure while her heart races for a senior at her job, but her sisters aren't far behind in the struggle for romantic survival. From the focused silence of sports clubs to the chaos of the classroom, the girls face the agonizing proximity of boys who see them only as friends or classmates. They share a bond that turns every personal setback into a family crisis. Between the clumsy attempts at flirting and the constant fear of rejection, the sisters must figure out how to translate their private pining into a confession. Can they successfully navigate the minefield of their youth without breaking their hearts, or will their first foray into romance end in a four-way disaster?

Also known as: 若葉さんちの青い恋.