Thank you very much for your comment :)
This idea of the wall only revealing itself when touched was not an idea I had initially. It was suggested to me during the stream when I was creating the game. And at first I couldn't put it into practice. But as it took surprisingly little time to create the gameplay, I was able to devote the final moments of creation to this little effect, which I also like :D
In short, all this to say that creating live with people sometimes brings a lot to the table!