I'm not really the target audience for this game. I have no knowledge base for Korean idols and I am not into visual novels, especially not the tropey ones. But Angel Wings is really good! The art is fantastic, the music (while intermittent) is nice and sets the mood, and the stories are surprisingly entertaining with a good combination of humor and seriousness.

Overall it is the composition of the work that really sells it. This is exceptionally well put together and presented and the hook of needing a NG+ with some characters, two different endings, secret routes and more really kept me coming back for more despite me absolutely flunking out of any good endings on my first 2 playthoughs. It also really helped that it let me play a girl! I am a girl who loves girls and this let me do that! The writing didn't TREAT me like some random guy protagonist 80% of the time and that was really what kept me hooked.

Overall for fans of visual novels I wholeheartedly recommend. For those who aren't - well, its free so what do you have to lose?

Angel Wings is a free to play Visual Novel that lets you romance a bunch of cute Korean girls. If this alone is not enough for you, I'll just mention that the game itself is actually enjoyable!
It took me 15 hours to finish all available routes ("The Ultimate All-In-One Guide" by ERA Ashix did help a lot). Every character is noticeably different, so it's easy to find something for yourself.
Thumbs up from me. The game is good and free - the best possible combination.

Story
At the start, you can pick your name and gender, but this doesn't affect the game in any major way.
The characters and their affairs are the most entertaining part of Angel Wings. Sure, you'll find a lot of cliches, but they don't have any negative impact on anything (imo). Hell, I would say that these cliches helped to build the endings in certain routes. Good stuff.
The stories themselves are uneven in quality (depends on the route) and the pacing is waaay too fast. It's still weirdly endearing though. To be honest, the whole world around your character is just plain weird. I'm not sure if that's what the authors wanted, but it somehow works well. You need to suspend your disbelief just a little.

Visuals and Audio
Visually, you'll like it or hate it. There's no in between. Instead of the usual "anime" sprites, the authors decided to use illustrations resembling real-life people. I loved it - it's unique and it looks (mostly) nice.
The backgrounds could use some extra work (lack of details), but they aren't ugly either.
The audio could also be better - the background sounds were solid, but the music was generic and often didn't fit the scene. There's also no voice acting.

Technicalities
Repeated dialogues (3-4 times), but that's the only issue that I've spotted.

I mostly play visual novel game with anime-like character or animated visual in general so playing one with an almost real-life character is refreshing to me and on top of that they injected it with K-drama tone, I appreciate it even more. Not sure about the resemblance to the real K-pop artist but all the characters are amazing having unique design, style and personality. Kei's good ending is the best best ending among them all but I despise the fact that you can only end up with 1 girl and not still keep in touch and be good friend with another. On a side note, having the fashion collectibles aside from getting all the endings are good motivation for player to start another playthrough.