You see Ao just by her seat. You decide if you should approach Ao. Soon enough, you find yourself bored, so then you approach Ao and try to talk to her

"Good morning Horie, how are yo-" before you tap her back

Ao doesn't notice you, but when you tap her back, she immediately stands up from her chair and looks at you, and screams quietly at the same time

Ao stares at you for a bit, blushing a bit, mouth open. Then Ao covers her face with a studying book

"It's nothing good morning!"