University student Yuasa Shio spends her days and nights buried in research alongside her supervisor, graduate student Yakushiji Tsumugi—affectionately called Mugi-senpai. The two share a quiet routine of late-night lab sessions, after which they reward themselves with cup noodles. Pouring hot water and waiting exactly three minutes becomes a cherished ritual, and the simple act of eating instant noodles together deepens their bond. The story unfolds on a science-oriented university campus, where real-brand cup noodles appear as part of the everyday humor and warmth. As they balance academic deadlines, experiments, and presentations, Shio’s admiration for her senior quietly grows into something more. In the latter part of the narrative, they travel together for a research conference, and an overnight stay at a hotel pushes their relationship into new territory. The series, a blend of campus life, gentle romance, and food-focused slice-of-life, follows these two female science students as they navigate research, love, and the comfort of a shared cup of noodles.