This review is for 2.15 + DLC1 + Decensored, after fully completing all content.
Story 5/5 - Despite this being an h-game, it actually has a deep backstory with a genuine threat to humanity, and it isn't overly-complicated. I didn't even come into this game expecting a story beyond "have sex with everyone", so this was a pretty cool surprise. There's also a lot of humor throughout the game.
Characters 5/5 - There are a TON of girls in this game (over 60), yet every single one has her own personality. There are 2 rivals in this game, and they both outshine almost every rival I've seen in official Pokemon games (no Blue/Gary clone, sadly!). Once you beat a girl, her dialogue towards you changes, sometimes from unlocking new fetishes she acquired during the scenes, so I guess they all have character development?
Gameplay 5/5 -
A) There are 151 Yarimon, with a handful that are one-of-a-kind in hidden areas. Catching them is pretty straightforward, since you don't need to worry about RNG in this game. Just use the capture item, and knock them out. Perfect for me, since I've never been a fan of the horrendous catch RNG in Pokemon.
B) There are a ton of trainers to battle in this game, and each victory will raise your "Trainer Level" by 1. Your team's levels cannot go higher than your trainer level, so assuming you aren't using Cheat Tackle or items to breeze through the game, there will be some extent of strategy required to beat tougher opponents.
C) There is a glossary for both Yarimon and female trainers (Yariman). Both of these glossaries tell you exactly where and how to find what you're looking for, so you don't need to worry about wandering around confusedly.
D) There is post-game content that includes more h-scenes AND more challenges.
Music 4/5 - The music's alright. Some of it is just regular RPGMaker music that I've already heard hundreds of times. There were a few bangers in the soundtrack, but none of them really stood out that much, and they are ultimately all forgettable. You also acquire a jukebox in post-game, so if any of the songs DID stand out, you'll have the option to listen to them again.
Porn 5/5 - First off, I'm not a fan of the way they did X-Rays in this game, and I'm especially not a fan of the fact that you can't toggle them off and on. With that out of the way, this game has a ton of really well-made h-scenes. The artwork is great, the animations are great, and the dialogue is great. Some of the girls only have one scene, but I have a feeling that the DLC's will eventually give every girl at least one more.
tl;dr One of the best Pokemon-style games I've ever played, with an exceptional story, gameplay, and porn. The developer poured their heart and soul into this game, and it shows. One of the easiest 5's I've ever given on this site.