In the serene ambiance of Rainy Color cafe, a burst of chaos disrupts the peace as Amami Yoko, the spirited daughter of the cafe's owner, storms in unceremoniously. Her target of frustration? None other than her father, Amami Koji. However, her fury falters as her gaze locks onto Rain, the cafe's lovable canine mascot, revealing her hidden fear of dogs. In a clumsy twist of events, her stumble leads to a shattered vase, a prized possession of Koji's. To make amends for the mishap, Yoko finds herself unexpectedly stepping into the role of Rainy Color's manager for the summer break.