Riko Suminoe ( 住之江 りこ, Suminoe Riko) Voiced by: Yuiko Tatsumi Riko Suminoe is a 16-year-old first-year high school student and second stepsister to Keita. As such she isn't afraid of abusing her authority on the student council to either make a pass at Keita, or cover up embarrassing occurrences. Having grown up with Keita since toddlerhood, Ako is altruistic and, of course, in love with him. In spite of this imposing façade however, she is outwardly emotional, childish, whiny, reluctant, easily embarrassed and perverse her most well-known open secret. The more intellectual of the pair, Ako is educated, maternal, responsible, the manager of the Student Council General Affairs, skilled at cooking, homemaking, and endeavors to maintain a prim and proper demeanor. Ako Suminoe ( 住之江 あこ, Suminoe Ako) Voiced by: Ayana Taketatsu Bright and cheery, Ako Suminoe is a 16-year-old, first-year high school student who is one of two stepsisters to Keita and twin sister to Riko. There, he is a first-year high school student in the same class as Miharu, with Yuzuki Kiryu as their homeroom teacher. A track and field club member, Keita is athletic more than he is academic however he strives to be, and eventually is, accepted to the same high school as his stepsisters. As a result, now that they are high school age, Keita finds it increasingly difficult to retain his modest, dignified morals especially when exposed to his parents' shockingly permissive attitudes.
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He was raised with two stepsisters, Ako and Riko, who are a year older than he is and have developed more-than-filial feelings for him. Nowadays the trio see their opposites in a noticeably less platonic fashion Ako and Riko frequently flirt and lust after Keita while, much to his stress, he fights the urge to give in to them.Ĭharacters Keita Suminoe ( 住之江 圭太, Suminoe Keita) Voiced by: Ken Takeuchi Keita Suminoe is a 15 years old third-year middle school student who is part of a blended family after his father remarried some years previously (Keita's mother having died when he was young). Since the remarriage of their parents at childhood, the siblings have always been affectionately close and supportive of one another. Keita Suminoe is a third-year Japanese middle school student living with his father, stepmother, and older twin stepsisters, Ako and Riko.