I never played actual Pokemon games, nor was I ever into the gimmick anyway, so all the relevant tropes aren't doing much for me. But the story proved itself surprisingly solid and I was actually interested. Characters are kinda flat, but this works well enough for what they are used.
Sex scenes are pseudoanimated with a lot of effort put into them. Quality is high and girls are expressive, but the artist has a mild case of same-face syndrome, made more obvious by the sheer amount of characters in the game.
Protagonist, while not an ugly bastard, is pig-faced and in the frame pretty often.
Finally, despite having over 60 girls half of whom have several scenes, most scenes are just mildly repetetive vaginal sex. DLC has more variety, but you have to finish the main story before getting to it.
Combat is, frankly, boring. Again, I am not a Pokemon fan, so maybe it's fun for others, but it's too snowbally and has little depth beyond "hit other guy".
While I bring up a lot of negative points, they are very offset by good pacing. Battles are fast and can be cheated through, sex scenes aren't too long and have some rest time between them, characters don't overstay their welcome, e.t.c.
In the end it's a medium-sized, cute, easily digestible and beautiful game.