I haven't seen anyone mentioning it, so just in case someone is wondering:
completing the game (thankfully) unlocks the CG/Scenes galleries and the ingame animations, so if you are a good soldier you get a reward at the end.
I agree with the above poster in that imho also, the graphics are good, the sprite anims are...okayish to decent, the gameplay is kinda solid - or, you know, at least when speaking about H-games. The voice acting -which should always be a huge plus- is just a minor plus here, because...well, it's kinda (who am I kidding; sometimes VERY) bland to be honest. Also the quality is often lacking (bad mic? xD). Also also, some lines (not that few, actually) in the game over scenes don't have their voice counterparts, and I don't think it's either a bug or a feature lol - just laziness/ran out of time/ran out of budget. Or something.
Oh, and the English. It's really just Google TL in its full glory. Or if someone had actually edited it (*doubt), that someone...ehem, shouldn't be proud.
In all honesty though, I expected worse. So, kinda decent, I guess?
Worth a play - just watch out for that mentioned game-breaking bug in the middle when set to English.
Btw, I played with the v210326 that was generously shared by kokoro1000 in the thread
here. (which has an "official" English TL)