Watched a playthrough of this on MrClockWork's YouTube channel, stopped it halfway through, downloaded the game, got the second ending, then went back and watched the other endings on his channel.
I'm really enjoying the story and I really like the world that the dev is making with these aquatic-human people. My dumb dumb self didn't know squid also had the ability to camouflage. I thought that was just an octopus thing, but you learn something new every day, haha! I will say, the story is a bit fast-paced, but that's not exactly a bad thing. Visual novels and text-based media in general can have a habit of over-describing details I don't care about. Fine for some stories, not so much for others. That would be my only "critique" if you could call it that. Maybe I hope that the final games have something marking the NSFW selections because while I enjoyed the scene where the MC sat in Thaumo's lap, it did take me off guard despite the warning at the beginning. It's not super necessary, though.
So far, I'm really digging Thaumo. Nalis is hot, but he's scaring me! no matter how counter-intuitive that is considering what the other male has done, lol. Though, I can definitely see him hitting a sweet spot for a certain type of person. That's probably my favorite aspect of this game. I think I can speak for a lot of people when I say I've been wanting to see two yanderes fight for love. The drama is going to go crazy. I also like that they're on different sides of the yandere spectrum, Thaumo being more passive and refusing to hurt you, while Nalis is more domineering and very much interested in hurting you, despite the initial personalities implying those aspects of their character are the opposite.
I really enjoyed this game and I'm excited for the full game and the female lovers.