Yosuga no Sora 6.23
Other Name: Yosuga no Sora: In Solitude, Where We Are Least Alone., Yosuga no Sora, Sky of Connection, ヨスガノソラ In solitude, where we are least alone.
Summary: Having lost both parents, the Kazugano twins, Haruka and Sora, decided to move in and live with their grandfather of whom they are fond of. Other motives, however, contributed to their decision to reside at their grandfather.