This checks most of the boxes you'd look for in a game like this, and can probably provide around 20-30 hours of gameplay on your first playthrough. There's plenty of CGs, there's a decent variation of endings/scenarios the main character finds themselves in (although there is a pretty heavy focus on pregnancy in almost every ending, it's still a Japanese game after all!) and there are plenty of outfits to collect and areas to explore. Additionally, the game has a decent hook to get you to replay it, since there are new dialogues, new titles, and new ways to play the game (virgin playthrough, etc.) which can only be unlocked in NG+. While the characters are a bit... anime-like, and sometimes shallow in their motivations, they are nonetheless also quite varied and you won't find yourself fighting the same type of enemy over and over again, and you collect a nicely varied cast of friends from across the game world by the end as well. Without giving any spoilers, I will say that this game also does (very) occasionally kill off side characters, which I personally like, but some might feel sad about. If you like hentai J-rpgs with heavy focus on combat and rpg aspects, and would enjoy actually playing through the game's story, while collecting CG occasionally, then this is for you. If you only want to view the scenes, I'd recommend finding a complete gallery somewhere and saving yourself a few dozen hours, though, as this is not a very easy game to just breeze through while skipping the dialogue (of which there is a *lot*, by the way).
I'd like to add that while I'm not deducting any score, there were some translation errors at the time of this review. I don't remember any untranslated text during the main story, but there were definitely untranslated texts during some brothel events, or during minigames such as with the bunny house customers. If the occasional stray line of Japanese will break your immersion, maybe hold out until the translation is finalized. It didn't impact my enjoyment of the game significantly, but YMMV.