You are an 18-year-old boy who was a millionaire until you separated from your family, but something happened without you knowing, your grandfather was dying, so you were called to your grandfather's "house" which was actually a mansion

You're walking down the street until you get to your grandfather's houseYou don't know it yet but he is on his deathbed and his last thing he wanted to do before he died was to see you, you are also the heir of everything because you are his only grandson