Bruh ... I alrdy have to see my fav singer being forced to do that in the movie ...for sake 10-20 sec of scene
Not telling whose her name since she alrdy married and retire from entertainment industry
And you want point that I don't know how Japanese entertainment work in real life ??
I am not talking about how the Japanese entertainment industry works in my answer. I'm talking about the writing of this manga. Norio certainly tries to show it realistically without rose-colored glasses, but let's not forget that Anna's career is just one of the backbones of the romantic story between these two and the tone of the manga itself has always been that all the serious problems were not such a big deal and the tension was resolved in one episode. Therefore, I doubt that Anna will be put in a situation where she will be forced to kiss an adult and do this hugging scene, rather the characters will think that they will have to do it, but somehow the situation will either be easier or resolved in a more relaxed way. At this time, you assume the worst-case scenarios of how the plot will move based on what the Japanese entertainment industry really is, ignoring the tone and style of manga writing. You also took a sex scene from somewhere when there is only a kiss and a half-naked hug scene. Kimioku is a shonen, Why would sex scene be there at all?
Also, as far as I know, during the production of a live-action adaptation, some of the original scenes can be cut or changed, or there will be a different staging of these scenes. Not at the initiative of the actor, but because it was decided during the production. Probably this will happen here, as soon as this conflict plays its role in the development of the romantic relationship between the two main characters and the hug scene may be eliminated and the kiss scene may have a different staging. And the speculation that Ichi might be used as a stunt double is based on the fact that such unexpected situations that arise with these two are not something new or unusual for Bokuyaba (just remember how they ended up in a love hotel), and also because if Norio is maybe going to approach the plot where the agency is trying to get in the way of Kyo and Anna's relationship (probably the biggest conflict the manga will ever have), then she will need to find a plot reason for the agency to know about Kyotaro's existence to further the story. And if it comes to that, this is one possible way for her to do it.