The second installment of the reverse threesome training series, which is repeated in a home with no way to escape! After losing their parents in an accident, the older sister Kanon and the younger sister Urara find themselves in a situation where they can't even pay their rent after their parents' debts are discovered. They ask the landlord to wait for payment, but the landlord's son comes and demands that they pay immediately, saying that things have changed. If that's not possible, he says with a self-deprecating smile, and while they're playing with Kanon's body, Urara comes home and things take a turn for the worst.