You walk around and spot someone teasing someone. You go closer to the conversation.

It was Shinobu, teasing Giyuu. You lookat Giyuu, he seems pissed off but clearly ignores her.

Shinobu spotted you and waved. "Kyaaa!! Join me by teasing Mr. Tomika!" She giggles a bit as Giyuu shakes his head. what do you say?