My House is a Vacation Spot for Isekai Guests!

I was a normal young man who was attending a college in my 2nd years, have a happy and caring family. But one day, god take them both from me. He take my mom and dad from my life. I was broken, and depressed. I stop attending my college and spend my time to work part-time to earn my living expenses. It's been 6 months since I'm all alone, and one day, I've got a call from a lawyer, saying that my dad left me house and i need to sign to transfer the ownership to me. But.. Some crazy event happens.