I will say I was a little disappointed by the fact status effects barely tied into gameplay unlike Mermaiden - especially that the bondage sequence was a sequence, and not another dynamically acquired status effect. The combat parts weren't really challenging - a little more than Mermaiden, but still mashing Z and looking in the direction of each enemy was enough - it's another one of those where you kinda have to deliberately sabotage yourself to trigger many of the scenes, but over the years I've come to accept that and while I wish it were different - constantly being locked into watching those animations would be even more frustrating.
Other than that, I really enjoyed the game. It controls tight, there's a good variety of enemies, environments and animations - I didn't come across any major bugs, I even found the story interesting and original without distracting too much from the gameplay, and we got an english translation out the gate.
Calling it "bad" is kinda laughable - even if you criticize this as harshly as you possibly could within reason, it's still objectively head and shoulders above the majority of what else is on the market, especially when much of that is already eliminated if you're looking specifically for the set of fetishes it caters to. It fulfills the basics of what an H-game needs to be - some scenarios and interactivity to contextualize animated sex scenes - and in many ways, it goes above and beyond.
I agree with Mikufanboy's comment, I think we hold H-games to an unrealistically high standard. Remember, this forum started around a game that had a grand total of 5 scenes/animations - 3 enemies, 1 game over, one game complete - and back then it was the best thing since sliced bread. Of course, we all want "more and better", but that's labor, which can easily be undermined by burnout, scope creep etc. if limits aren't set from the beginning.