Introduction: Amane Fujimiya’s neighbour in the apartment he lives in is the school’s number one lovable angel: Excellent and with a level of beauty that can only be described as angelic – Mahiru Shiina. Amane, an ordinary student who doesn’t stand out, is her neighbour, but until now, they didn’t interact with each other. After meeting the soggy angel in the rain:“I’m returning what I borrowed. By the way, clean up your room. It’s filthy.”“None of your business.”A relationship with a sharp-tongued angel begins, starting with handing over an umbrella. From catching a cold and having someone take care of you, to making a meal for someone because they neglected their health, to joint work (cleaning rooms)…...