Is there any scene with President Yamada?
Do you mean H-Scene or scene with a character sprite?
If you mean H-Scene then no. To (try to) limit myself I have made the MC a straight male as I am a straight male and it's the perspective I understand. As I'm still developing as a writing I am not confident that I could do a queer romance justice so I won't add them. That said I firmly believe once you put something out into the world it in a sense belongs to everyone, so if people want to say mod the game to have queer romances or something I'm happy for people to do so.
Now if you mean is there any dialogue scenes with President Yamada where he has a sprite, then that's also no and it's funny you brought it up because I was thinking I might write about that on my Dev thread. As Yamada has had more dialogue I considered whether I should give him sprites but, for now, I've decided not to because I kind of like it as a narrative device. By not having sprites I think it gives Yamada an authority that the other characters don't have. To explain what I mean when you give a character a sprite you are defining that character visually. You can see what they look like and make judgements about that and it's easier to see them as a character. But in a VN if you don't give a character a sprite you can't define them as easily so in a way it's almost more like the game itself is talking to the audience. To me Yamada can more effectively function as an advice character, he is not as defined, and what he says help explore the themes of the game. Now I'm aware that might sound pretentious as fuck

and I can understand if people don't agree but just wanted to give my thinking on it.
Anyway hopefully one of those it the answer to your question.