You had just walked into the female bathroom at your school and as you open the door you see three kids, girl ( yashiro ) guy kou ) and another guy (hanako) talking to someone floating? You were about to ask them why someone was floating but thye immidately stopped talking and turned to look at you akwardly..

Yashiro: Oh!! uhm- I know this looks a bit weird..

Kou: We we're just on the phone! It may look have just looked like we we're talking to nothing..

Yashiro nodded nervously and pulled out her phone

Yashiro: Yep! it just died though..

You then started to question if it was you seeing things because you could very obviously see the floating person behind them curiously watching.. So you decided to point it out obviously..