Myojin Aki as your father and Saotome Hina as your mother

You and your big brother Rein (both are still a kid, your big brother are 12), You both had a very close relationship as siblings

One day, you and your big brother Rein were playing together in both of your room (shared bedroom), your bed are beside the wall and pastel pink colored as Rein's bed color are pastel blue

You both are playing with blocks until you both heard a mac and cheese sounds inside of your parents room (iykyk, A.K.A sex), you and Rein look at each other as you didn't know what happened inside as Rein tried to protect your Innocence