
nahh dont feel like that.. its just to see how good the actor act… its improvise to make the story more interesting tbh plus he is need to get a challege since he is newbie who got a bigger role.. its one of his trial to know how smooth he act and if not he will get lecture and advice.. its part of a learning

I still feel that's it's a dick move. There's a difference between letting an actor know that there may be improv so that they can be somewhat prepared for what may come (and then they can still be crap at improv) vs this.
This feels like a nasty prank (with a tinge of jealousy). They appear to be in front of an audience and they've thrown Yoohan in blind. As someone below said -- does he even know what improv is??
As an example - it's like being told to study pages 1-3 and then having a pop quiz only on things on page 4. It's either a - you didn't

I still feel that's it's a dick move. There's a difference between letting an actor know that there may be improv so that they can be somewhat prepared for what may come (and then they can still be crap at improv) vs this.
This feels like a nasty prank (with a tinge of jealousy). They appear to be in front of an audience and they've thrown Yoohan in blind. As someone below said -- does he even know what improv is??
As an example - during uni I was given a voice recording of a student to analyze (linguistics!). I then met that student later and was thrown by how they sounded completely different. I got marked poorly and when I went to complain / gave proof that they uploaded the wrong recording, the teacher went: Oh, well sometimes things like this happen and you just have to roll with it.
[Actually no. Do your damn job. Give me a better grade. Hell, an apology would have been nice versus them saying I was the one at fault].

It IS a dick move and no one should do that in real life, there are other ways people learn improv and get better at acting. But those ways are longer and tedious to draw out. I do think here that it isn’t in bad faith but they want to force yohan into improv because if they told him about it he might act unnaturally or stress about it. But that kinda stuff only works in fiction lol
The hell they all acted like he wouldn’t know his lines then just said whatever they wanted that aint right