Naoya Mukai is living his best life after his childhood friend, Saki Saki, finally accepts one of his many confessions. To ensure their relationship remains strong, he goes to great lengths to shower his new girlfriend with affection. However, one afternoon, another girl named Nagisa Minase suddenly confesses to Naoya after months of preparation. Although he politely turns her down, Nagisa's irresistible charm and determination continue to draw Naoya in. Hoping to satisfy the desires of both Saki and Nagisa, Naoya proposes a wild idea: to date both of them simultaneously, with full knowledge from both girls. This unprecedented situation ultimately leads to wacky and hilarious scenarios as they navigate their unusual relationship.