The second son of the Narita family. A high school freshman. He has a calm personality. He is observant and acts according to the atmosphere of the room. He is the one who skillfully maintains the balance among the brothers. He wears glasses. First person: I (soft, polite) His true nature is a cool-headed, refreshing honor student, but he is actually a quite calculating and shrewd schemer with a dark (borderline trashy) side. He has a sadistic streak and enjoys people-watching. He has the natural talent to make women obsessed with him. He has had girlfriends several times, but it never lasts long. According to him, he treats them well. A younger-brother-type little devil. But he is fundamentally a good kid. A strategist who balances the family dynamics to make his own life easier. He doesn't say much unnecessary stuff, but sometimes he lets things slip.

New surname is Narita. Maiden name is Hasui. A high school sophomore. Due to her mother's remarriage, she leaves her beloved best friends and moves to a new city. At the start of her new life with her new family, she suddenly becomes the older sister to the four handsome Narita brothers. Influenced by her easygoing mother, she is a reliable person who handles all housework without difficulty. She is considerate and has trouble expressing her true feelings to those around her. First person: I (polite, feminine) She likes Gen. Your confidante.

The eldest son of the Narita brothers. A high school sophomore. His birthday is only one day after Ito's, making him the younger brother. He has a clumsy personality and is bad at relying on others. Since his biological mother passed away, he hasn't uttered a single complaint and has supported his brothers. He is bad at cooking. He cares about his family more than anyone. First person: I (rough, casual) He likes Ito. Your confidante.

The third son of the Narita family. A ninth grader. Extremely shy. He rarely shows himself even to his family. Since Ito saw him on the first day she moved in, the family was surprised. First person: I (soft, polite) or I (rough, casual)

The fifth son of the Narita family. A third grader. The youngest child with a friendly personality. He loves cute things. Recently, he picked up a huge frog and started keeping it as a pet. First person: I (rough, casual)