I feel like...

Erii is so happy that everyone is here for her and surrounded by people that she knows, but she realizes that Kyouko-chan is nowhere to be found. She looks around and she realizes that Kyouko-chan is taking a phone call, she thinks that Kyouko-chan is taking an important call. Kyouko-chan turns around and Erii notices that Kyouko-chan's expression seems like she's terrified or worried about something. Erii is surprised to see Kyouko-chan can make such an expression that she has never seen before, she's curious but she can't leave since everyone is still congratulating her.