To sum up my experience playing this game, I would say that it delivers what it promises, and then some.
A lazy angel that kinda just goes with the flow, both in terms of dealing with the underlying problem causing all the events in the game, and with the sexual aspect itself. Then add to that her two fellow angels, a ditzy, forgetful, brash "fallen" and a young honour student, clumsy in dealing with others. Above them is their boss/teacher, always ready to help humans in any way possible.
I shall begin with the thing that made me truly enjoy the game. The porn game portion of it. I love the bodies. ACTUAL DIFFERENT BODY TYPES holy shit, in this day and age? No copy and pasted figurines, just shrunken or stretched, with bags of silicone masquerading as tits. No, unique, memorable characters, I genuinely love the tits on all the characters, pity that the fortune teller has no scenes, the fact that the protagonist's body parts change with her "progress" is hot as hell, there are so many customisations, options to choose from, be it pubic hair, the shape and colour of her nipples, even the state of her vagina depending on the amount of sex she has had. And you get to choose how she looks during the scenes, I cannot stress the importance of pubic hair in terms of my own enjoyment of porn games, I find fully shaved intimate areas extremely boring, although I do find leg-hair and full on, unhinged jungle everywhere repulsive so...balance is important : ), and what 3D authors (western) try to sell as "hairy" is, most of the time, just pure sadness and misery. I am fully aware that there are people who prefer the opposite and that is where the option to choose comes into play. The usual "state of her body" menu is there as well, with levels and progression, her reactions to different sexual actions, even her profile with body measurements and some character flavour, some pregnancy content, some other fetishes, certain scenarios are extremely hot, for example a rather fresh take on the hypnosis trope, all the characters get a decent amount of scenes, and even though there are no animations, the translation (thanks for the effort JustXuX, much appreciated) is at least decent, even made me read some of the story, which ensures that the scenes do not get killed by the usual mtl induced nonsense. No extreme fetishes, a small amount of a bestiality innuendo but nothing ever truly happens, some piss, branding, but no scat/gore/vore/ntr/cuck/bbc and other aids, so huge plus for that.
The gameplay is passable, usually, you just have to do a few events, before a main event gets unlocked, no grinding, you always get a new "stage", so no repeats are necessary, there is an option to buy the "love points" for a measly amount of coins, the "battles" consist of trivia questions, slightly focused on Japan, but not overtly so, the kind soul that translated this provided us with both a walkthrough, and the answers to the quiz, if, for some reason, you don't want to cheat or use the ingame items that solve everything for you. Some random "encounters" during the night, again with an option to turn them off right from the beginning of the game, no need to finish it first. In general, a really friendly system for some one-handed gameplay.
In conclusion, as the time passes and I go through more and more porn games, I am slowly drifting away from anything 3D, especially made by western developers. I am not interested in a spineless bitch of a walking dildo pretending to be a protagonist, who gets shared by a cackle of strong, independent, ungrateful cunts, and that is what I usually find when I play something that came out in the recent years, with that said a game like Lethargic Angel brings me joy, and just to be sure that I got that point across, the female bodies in this game are exactly to my liking, when you take off her bra in the changing room menu, her tits slightly sag and "spread", just some small details like these, but they work like a charm on me. Personally prefer female bodies in games/art(hentai and so on) that have..."flaws". Definitely recommended! It is up there with some of my favourite games I've ever played.