Never heard of Ever 17. The basic plot does remind me of 999/VLR - looks pretty interesting.
Do not expect a 999 experience. I had to yawn through the first hours of the game, because of very poor pacing. I had even abandoned it for a while. But after reading SO MANY positive things about it, I gave it another try. And it was WORTH IT!!!!
Karma is a wonderful piece of music and, if you listen to it after playing the game, it summons so many memories... (The image of the video can be spoilery, but if you know nothing about the plot, it will mean nothing)
But you have to be patient with Ever17.
The other chapters of the Infinity series are good too: Never7, mentioned before, and Remember11, which is an awesome experience with a too much convoluted plot.
Uchikoshi had a big role in all 3 games.