Thrust into living under the same roof with two love interests, Natsuo is tormented by being at the center of a love triangle which has also been newly carved into his family tree! His father announces he’s going to remarry and that he’ll be getting a new mother and two sisters. Shockingly, they happen to be his high school teacher Hina, and her younger sister Rui, a girl with which he slept with previously. There’s more than meets the eye to these two beauties, and Natsuo might not be able to handle one of them let alone both.

Uesugi Fuutarou is the smartest guy in his whole school, but unfortunately, his family might also be the poorest. While he’s savoring another bland yet inexpensive lunch, he bumps into a beautiful girl who claims his coveted, out of the way seat in the cafeteria. The two do not get along and both hope to never cross paths again. Unfortunately, Fuutarou has just been hired by the Nakano family to become a tutor for, you guessed it, the angry beauty from lunch. Here’s another twist, she has four identical sisters and not all of them are very fond of him either.