Naoya Mukai is a high schooler whose life is thrown into romantic chaos when his childhood best friend, Saki Saki, finally accepts his confession after years of unrequited yearning. Blissfully happy, Naoya resolves to never betray Saki. However, his loyalties are severely tested when the adorable, hyperactive Minase Nagisa confesses her deep feelings for him. Though initially inclined to reject Nagisa to stay faithful to Saki, Naoya is completely captivated by Nagisa’s relentless dedication, exceptional culinary skills, and pure devotion. Driven by a wildly idealistic desire to avoid hurting either girl, Naoya makes a remarkably absurd proposition: he decides to ask Saki for permission to date both of them simultaneously.Miraculously, after much shock, hesitation, and fiery resistance, Saki reluctantly agrees to the bizarre triangle, fueled by her own competitive spirit and fear of losing Naoya to her rival. This sets off a chaotic cohabitation arrangement where Naoya, Saki, and Nagisa move into a large shared home to navigate the unconventional dynamics of a three-way relationship. The plot thickens significantly with the arrival of Rika Hoshizaki, a popular live-streaming personality known as "Milika," who develops an intense crush on Naoya after he inadvertently rejects her advances. Desperate to win him over and capture viral content, Rika relentlessly intrudes into their daily lives, eventually forcing her way into the household as a fourth member of the expanding polyamorous dynamic.As the romantic farce escalates, the household is further complicated by Shino Kiryu, Saki’s fiercely protective and pragmatic best friend. Shino initially acts as the voice of reason, fiercely criticizing Naoya’s scandalous lifestyle and trying to protect Saki from heartbreak. However, spending so much time around Naoya sparks a confusing internal conflict, leading Shino to realize she has developed secret romantic feelings for him as well, plunging her into deep
emotional turmoil as she battles her own conscience. Throughout the series, the narrative balances slapstick comedy with genuine
emotional growth. The girls frequently clash over jealousy, personal boundaries, and affection, yet they gradually form a surprisingly deep, supportive bond. Naoya continually strives to prove his genuine devotion to each partner equally, proving that beneath the ridiculous premise lies an earnest exploration of unconventional love, acceptance, and the true meaning of commitment in a wildly unorthodox modern romance.