No. In the game, you can use buttons to interact with every sister in the game, whether it is the cat girl or the younger sister, but you cannot push the younger sister. "Chocolate and Vanilla 4" is a love development game. It is the fourth sequel to "Chocolate and Vanilla" produced by NEKOWORKs and published by Sekai Project. The game continues to feature the protagonist and the cute "NEKOs" love story.