Episode :
“We have become Onii-chan’s exclusive pets.” The sisters Rena and Aina, who have both developed a mutual affection for their stepbrother Shota, have already undergone a specific form of training. He engages in lewd games at any location without regard for anything, leading the sisters to descend into depravity… However, one day, Aina receives a love letter from another boy, prompting Shota to show interest in another woman… Will the bond between the sisters, who are treated as sexual pets, be shattered?
