The Healing System Was Loading

She Ann was walking in a strange and complete dark corridor: suddenly he arrived in the light and he discovered to be on a school’s floor while a girl was about to jump off. 
He subconsciously tried to save this beauty, but at the end he had not sufficient strength because of some injuries on his body, and they fall down and they both survived. 
After some days She Ann woke up in a hospital, and because his injuries healed, he came out to discover to be in a new world for him, and now he had a strange “old” phone, with a healing system inside: in exchange of rewards She Ann had to help and “heal” other chosen people as a “doctor”. 
In his first mission he had to be the psychiatrist and the “nanny” of a stunning girl, of the same age as him, daughter of a rich woman, and in order to do so he had to live side by side with her in her university with a secret identity as a student. 
What could happen?