Yuki Kurihara, a second-year high school student, finally gathers the courage to ask out her crush, the first-year Shinya 'Momo' Momotsuki, after secretly taking a hundred photos of him and observing him for months. Despite Momo's surprise, he agrees to date Yuki without knowing her unusual habits like collecting his used straws and engaging in 'Momo watching.' As their relationship progresses, Momo, inexperienced in romance, navigates awkward situations but strives to keep Yuki happy. Through their shy exploration of love, Momokuri follows the couple as they confront the challenges that come with their budding romance.