Gibomai (Step Sister) Episode 2 delves deeper into the complex dynamics of the Wakao family, intensifying the psychological and emotional tensions established in the first episode. Following the death of his father, Kyosuke Wakao grapples with his animosity towards his stepmother, Megumi, and his stepsister, Yuna. Megumi, in a bid to secure their place in the household, makes a controversial proposition: Kyosuke can engage in any activities he desires with Yuna if he allows them to stay.