After countless confessions, Naoya Mukai is overjoyed when his childhood friend Saki Saki finally accepts his advances. Determined to keep their relationship strong, he showers his newly beloved girlfriend with affection. But then, one day, another girl named Nagisa Minase confesses to Naoya after months of preparation. Despite politely rejecting her, Naoya can't resist Nagisa's charm and determination. Wanting to please both Saki and Nagisa, he proposes an unconventional solution: to date both girls at the same time, with their full knowledge and consent. Their unusual relationship leads to hilariously wild situations, and they do everything they can to keep it going.