If i would have to describe Sunshine Love with only one word, that word would be: disappointing.
I was enjoying Sunshine Love during chapter 1. There is a well enough story background regarding the MC job, family, girlfriend and going to help his half sister run her hotel for summer. There are some antagonists, actual villains in the story and the relationship between MC and her sister is done pretty good. Chapter 1 is pretty slow with progression, not that many scenes, only at the very end we finally do the thing with our sis. There are some other girls we can romance, and with some of them we can have sex a bit quicker. Unfortunately not all of those girls are interesting and some of them seems just to be there as plot devices. But nonetheless, i was enjoying chapter 1 quite a bit. But later, with chapter 2, i don't know what happened. I'm honestly not sure if i just lost interest in the game, or chapter 2 is just so much worse than chapter 1. Everything feels very bland, with no depth, just boring to play. Main story runs in circles few times over, most of the dialogues are skippable and relationships with the girls feel rather flat. I know most of them are supposed to be casual, since the MC is only there for a summer and after that he'll be gone but still. This whole premise of strictly casual relationships, summer flings could be an issue itself. Thanks to this, neither the MC, neither the player have a motivation to actually get closer to those girls. I mean, if we're going to left them in 3 months time so what is the reason to actually engage with them emotionally. Those "main" relationships with your half sister and with her cousin are done quite well, and in those cases there are definitely some feelings involved, they look like a proper romantic things but the constant threat of leaving the place doesn't help. Many times MC thinks about not wanting to get closer because he'll leave soon, especially if he's still with his girlfriend back home. This "open relationship" thing with his gf sounds good on paper but it doesn't change anything. Either we have a permission from our gf to romance other girls during this summer visit, or we dump her at the start and we're free to date whoever we want. But regardless of this, we'll still be going back after summer so this doesn't mean anything. Only some different dialogues. And since our gf is not really an interesting character, i see no reason why we shouldn't end things with at the very first occasion. We can romance all the girls without any negative consequences but there is no harem ending, only some stupid dream. That's so bad, so whats the point of romancing all the girls if we still have to choose at the end? Games really should stop doing this. There is a fairy decent number of endings, solo endings and with some groups of LIs. Honestly? It's quantity over quality. Those ending are rather short and just uninspiring. They don't offer enough new content (seriously, most of them don't even have any new proper sex scenes, only short montages). Same scenes and dialogues are happening in different endings sometimes. This feels very rushed. Overall they're just disappointing and unsatisfying.
Visual quality is ok, but nothing more. Renders are solid, but too colorful for my taste. It fits with the summer theme but it just doesn't look realistic. Backgrounds could be better, especially outdoors. Many times things in the background, like some objects or even floor are pretty low quality and it just looks bad. Models in general look fine, but inconsistent in quality. Even on single girl model you can see that some body parts are worse quality than the others. And this is hilarious since the main girl model have better quality neck than breasts. If anything, it should be the other way around, right? Speaking about models i have to mention that the MC dick looks like it was made from plastic or something, like it's just an orange dildo. At the beginning of the game there are two scenes with different, much better model but after that it got replaced for no reason. And now we have to talk about sex scenes. Honestly, they're boring. They feel completely lifeless. Whats worse there are many repateat positions and animations during different scenes with different girls. This is just lazy as hell. For the 70% of the game every blowjob looks exactly the same, with the same camera angles and the same animation. Animations and scenes are only getting better in the second part of chapter 2 but even after that, in chapter 3 and even during the game endings some scenes are still the worse ones, with worse animations. This is such a letdown, when you think all the scenes will look better now, its just so disappointing to see thats not the case and only few scenes are indeed better. Music is there but implemented in the worst possible way, as a music player we can control. This is no good, specific music should be implemented and changing depending on what's happening currently. Tracks themselves are ok, but their implementation is lacking. And sometimes where there is some event specific ambient, our music player still plays so we have two different tracks playing at the same time. There is sound during scenes like moans etc. and they're fine.
Ultimately, Sunshine Love after rather promising start turns into very disappointing game, with bland and flat LIs and relationships, disappointing and lazy adult scenes and even more disappointing endings. From chapter 2 onwards game just becomes boring to play. It took me more than 30 hours to finish the game and see 15 endings, and i can say that it was not worth it.