<Dd> Voiced by: Takahiro Sakurai (Japanese); Clint Bickham (English) </Dd> <Dd> The male protagonist who is the heir to the Mikadono Group . For him to take over as head of the Group, he needs to graduate from school as well as find a life partner . However, things become complicated when he learns that his father, Kumagoro, had an illegitimate daughter who is watching over him as well as attending the same school . This leads to Shogo trying to find his sister . He has a scar on his forehead from an accident when he was kid that caused him to lose some of his memories . Eventually Shogo chooses Konoe to be his lover but she is revealed to be Kumagoro's illegitimate daughter . Eventually, it is revealed that he is not Kumagoro's biological son and thus they are not related . </Dd> <Dl> <Dt> Konoe Tsuruma (鶴 眞 心 乃枝, Tsuruma Konoe) </Dt> <Dd> Voiced by: Kaori Ishihara (Japanese); Monica Rial (English) </Dd> <Dd> A black - haired young girl who attends the same school as Shogo and also the first friend he makes on his first day of his new life . Very curious and believing in destined meetings, she is in the same class as Shogo as well as the class representative . She loves creme puffs . She revealed later that she was Shogo's childhood friend and feels responsible for the accident which landed him in hospital . She has the same phone as the mysterious shadowy figure shown once calling Shogo . It is later revealed that she was also the one who sent him the cake, photo, and action figure on his birthday . She initially called him using the voice of Perin a character from "Transforming Warrior Granberion". She is in love with Shogo . This is underscored when she tells Shogo, "When we were kids, I wanted to be your sister . I figured we could be together forever that way ." The phone she used was a prototype developed by her father with a rare voice changer feature . Eventually she becomes Shogo's lover but also reveals that she is Kumagoro's illegitimate daughter . However, in volume 9 it is discovered that Shogo is not Kumagoro's biological son and thus she is not really Shogo's sister . </Dd> </Dl> <Dt> Konoe Tsuruma (鶴 眞 心 乃枝, Tsuruma Konoe) </Dt>

Who is the sister in my sister is among them