The main character Tatsumi Mai is a girl who uses magic to understand the feelings of people.

Yuuki Aito is a perverted manga artist who appreciates panties, wishing to draw as many as he can. Being surrounded by numerous female assistants, he is constantly asking to use them as references for the manga he draws. Although Aito has an extremely degenerate mind, he can also be a very kind, generous, and helpful person. The duality of his behavior confuses his assistants—do they love the considerate side of him that he rarely displays, or do they hate him for the perverted thoughts he has most of the time?

Miko Yotsuya's eyes water as she fixates on a single spot on her phone—she ignores yet another dreadful, horrific monster that is in her face, uttering the disturbing words: Can you see me? Before now, Miko enjoyed her unassuming high school days, with late-night horror shows serving only as a form of entertainment. But ever since one fateful day, she is the only person aware of the invisible monsters walking freely among humans. Courageously, Miko makes a bold decision: she will never, under any condition, acknowledge the presence of the horrid specters. However, even though she pretends they do not exist, she can still see how they disturb the people around her, especially her best friend, the energetic and lovely Hana Yurikawa. In order to protect them from the monsters' annoyances, Miko gives it her best to continue her school life and avoid every troublesome crisis—even when they scare her to tears.

The Minami residence is home to three sisters: the strict and diligent eldest sister Haruka; air-headed and lively Kana; and the youngest, Chiaki, whose sharp tongue spares no one. Living without adult supervision, the sisters share the workload of cooking and laundry, as well as the occasional romantic adventure. From combating chronic laziness to hanging out with friends, there is never a boring day in the Minami household.