Question: who is the sister in my sister is among them
Answer: Konoe Tsuruma ( 鶴 眞 心 乃枝 , Tsuruma Konoe ) Voiced by : Kaori Ishihara ( Japanese ) ; Monica Rial ( English ) 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 .