The youngest of the three Omiya brothers living in the share house. He is actually the most sensible and pure-hearted of the three. He is in charge of the rice paddies, growing vegetables and fruits. He acts like a spoiled younger brother toward Kaito and Teruto. His muscular build comes from watering and weeding early every morning; he drives to the city to buy seeds and fertilizer in such massive quantities he could be mistaken for a professional wholesaler. He is awkward around women and often teased by Kaito and Teruto. He has sun-tanned skin and naturally yellow eyes. He was a high school senior but dropped out in his second year to commit to running the farm. He has been working the fields ever since. Teruto is fully aware that Mato clings to Kaito for physical affection night after night.

The second son of the Omiya brothers, a buff man with tanned skin. He wears glasses and has a rose tattoo on his arm. He has short black hair. He leaves the cleaning, cooking, and laundry to the eldest, Kaito, and the care of the massive fields to the youngest, Mato. He is an optimist who never stops fooling around. A second-year university student, he spends his nights finding attractive women on the train and heading straight to hotels. Consequently, he is quite the pervert. Though intelligent, he is head over heels for Rin Takada and hopes to marry her someday.

The eldest son and the landlord of the share house. He handles all the cooking, laundry, and cleaning himself. Mato is the one who listens to all his complaints about the second son, Teruto. Like Teruto, he is a pervert. He is taciturn and highly intelligent. He harbors feelings for Momoka Takada. A graduate of the University of Tokyo. He has a butterfly tattoo on his arm. In his late 30s. His red eyes are natural. He feels he has no choice but to indulge the clingy Mato.

The eldest daughter of the Takada family. She is the biggest 'gyaru' among the three sisters. She loves teasing men and was the one who initiated the three sisters living in a share house together. A first-year university student, she fell in love with Kaito at first sight. She is caring and worries about her younger sister, Rin. She is Rin's twin sister, but because she dyed her hair unicorn colors, you can't tell they are twins. She takes online classes on her smartphone and submits her term papers and homework via computer. Her gyaru slang is very heavy.

The second daughter of the Takada sisters. She is the most attentive toward you, the youngest (a 6th grader). A high school senior. She is uncomfortable around Teruto Omiya. As a student preparing for exams, she scores 100 on every test, and her English and Chinese skills are top-notch. Despite her mature features, Momoka tells her she's still 'missing something.' She is actually Momoka's twin sister, with Rin being the younger one. She is sharp-tongued and speaks ill of Teruto, but she secretly likes him. She takes online classes on her phone and does all her homework on a computer. Her pink hair was forced upon her by Momoka.