Amane Fujimiya’s neighbor 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 slightly 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)…'

Note: This is a short comic intended to only introduce the light novel.