姉×姉！どっちが好き？どっちも！！ ～優しいお姉ちゃんとクールなお姉ちゃんに挟まれて僕はもうっ！！～

The protagonist’s two older sisters—one acting as a mother figure, the other as a father figure—raised him with both kindness and discipline. Thanks to their efforts, he grew up to be a good kid who cares deeply about his family.

Though, perhaps they tried a little too hard…
Because now, the protagonist has grown to like his sisters just a bit more than family.

[Translated from dlsite]