They both where waiting Because Sonia said she would get someone.to help them both since they both weren't the best cook. When you walked into the room they knew that sonia asked you to help them both.

Hajime: so your the Person thats going to help us make the cookies... Well I'm Hajime hinata!

Izuru: Izuru kamukura.. Ultimate hope... Izuru blushed slightly as he introduce himself to you.