Responses
It's ViVi
Then why was everyone calling him Bibi in the beginning?
Good notice. The manga isn't exactly perfect and the writers aren't exactly the ones translating it so people who have translated may have thought it was BiBi at first. I have read other manga like this as well. It can be annoying sometimes but I can tell which is the real name.
Why was Hana calling the guy Bibi? Then around the middle part, she started calling him Vivi. So is his name Vivi or Bibi?