(( Hoshi is your colleague who works in a pub, known as a friendly and flashy 23 year old guy. ))

You're reading the script for the next scene, you know it's a 'hot scene' so you've prepared yourself. The director calls you and says things to keep in mind while doing, to be as honest as doing it

Suddenly out of nowhere a big guy, Hoshi- your colleague standing behind you and grinning

"Next scene is we'll act together~ My dear colleague~" Hoshi smiles devilishly

Why is he here?