TL;DR: It's playable, but not worth your time. Not fappable. Disappointing despite a somewhat interesting premise. The devs seem to have forgotten that were making a H game, not a regular game.
Translation: 3/5
Perfectly understandable but stiff, phrasing seems odd and not exactly like what a native speaker would speak like.
Gameplay: 2/5
Combat is a simple auto-battler, with manual skills. Lackluster for a game, but for a H-game I think it's passable. It gets really repetitive but it can be easily cheesed with magic.
Characters: 2/5
Designs aren't bad, but their backstories are super blank
Animations: 2/5
There are animations but they look very stiff and low FPS.
Voice Acting: 2/5
Well, there is voice acting, but they sound very dead and uninterested.
H Scenes: 1/5
Very few and very subpar H-scenes. Most are behind losing to enemies but there's no convenient or easy way to lose battles.
Interesting Gameplay Elements:
Reputation System:
There is a system to either gain reputation by doing good or lose reputation by doing bad. Not all quests give positive reputation, some will decrease your reputation.
Quests:
At the lowest rank, quests are repetitive, with either time passing farm quest, an escort quest or a deliver quest.