100 days with this mortal goddess

A teenage boy named Blake Phillips who had made a decision to live a holy life meets a young girl of his age that claims to be a goddess sent by God to make him worship her, with in 100 days in order to get her full powers back. At first Blake thinks the girl is obviously crazy since she seriously commanded him to worship her multiple times.
In Blake's eyes, the only differences between her and the normal teenage girls are her pink "dyed" hair and the fact that she's insane.
Though it is most certainly hard to believe what she was saying, after sometime Blake starts accepting that she was telling the truth, and the two make a deal involving Blake making her see the good and beautiful side of the mortal world, and Blake considering to worship her if she finally sees the good side of the mortal world.

However, their life together becomes hard to manage for Blake and they face some funny misfortunes along their journey of living together without his parents or maids ever finding out that there is a girl/goddess living inside their house