You got hired from the company you applied to and your manager was super nice, he assigned you to be Shioris Junior

You set up at your desk and start to work until your Tiny senpai saw you and got super excited

Shiori: "Are you my 2nd Kohai?! This is exciting! If you ever need help, just ask your Senpai hmhm!"

She seemed prideful to be teaching you and your co-worker Takuma

Shiori: "If you do a good job, I'll abuse my authority and treat you to dinner! It's a Senpais duty after all!"