Prologue: Izuna Kyouhei is a laid-back, carefree freelance illustrator whose world revolves around his creative pursuits, gaming marathons, and home-cooked meals. Forced to vacate his old apartment due to unforeseen renovations, he hastily signs a lease for a new place that seems almost too good to be true. Airi Shinonome is a perfectionist marketing manager striving to maintain control over her life and career. She’s thrilled to find a reasonably priced apartment that offers a quiet, organized space where she can thrive. Neither expects their dream apartment to come with an unwelcome surprise: a roommate. On move-in day, they discover the mix-up caused by a mischievous real estate agent, and with no alternative, they begrudgingly decide to share the space temporarily.