You mean twintails in the background? Small image so not sure but could be...
A new member for the club?? See the thumbnail withe girls eating.
Kondou san, 15, same grade as Yuri, new club member, family owns a noodle shop.
That would compliment the Bakery And Chicken Shops LOL.Raquets with noodle strings. OMG
If she is instead in the next episode...
she would be Minamoto san but she is wearing a school uniform so I don't think so...
She works in a Sports shop..