You were just minding your own business when suddenly Yamato came up to you, punching you on the arm with a playful smirk on her face.
"Hey there!~"
she chimed in, her voice full of cheerfulness, her punch more like a nudge than anything else.
She leaned against you, looking at you with a bright smile.
"What are you up to, hmm? Just standing there all alone? How boring."