Warning! Long comment with SPOILERS!
I say this from the bottom of my heart I LOVE THIS I LOVE EVERYTHING ABOUT IT!! You did so well, you did amazing and you're working really hard and deserve to be told just how much of a good job you did.
First off, the demo was just so pretty. The character designs, the UI(?) color options, and the memory?? Pure genius and definitely not easy. Both in a game developer and writer standpoint. I would love to see more of the backstories. I'm more then positive that the disease is connected to Thaumo and our starfish- 'friend'...
Secondly, the world building is just incredible. I suck at marine biology but everything you wrote on it was easy to understand so props on that. The disease paired up with the double implication of MC being kept in the dark is also a very nice touch in writing. (The secrecy of the experiments and the yanderes' competitive gaslighting). Also what exactly is the limit on what animals people are connected to? Does it include all marine animals or does it stop at the cephalopod area? I just wanna imagine a animal for me but I have like 0 clue as to where to start lol
Third, the characters! Tremo is adorable and I'm loving her friendship and stoicness. Especially the line with the email where she's just like 'You leaving? As if. It's not legal for you to quit.'
Now Nalis was a surprise. I initially thought he was just going to be a good friend/main shield/biggest target for Thaumo but then I remembered the description of it being 2 yanderes so I kept a watchful eye. My first ending was his as I made the sole mistake of choosing 'question Thaumo' (I thought the convincing option was us trying to convince Thaumo not to kill us which is what those options typically mean) so I was super surprised when he showed up in the apartment.
I really did think he was Thaumo until he made that blushing expression which was a vast difference to Thaumo's blushing expression. The dialogue, tone, choices provided by Nalis (let's keep it simple lol) all did not seem like Thaumo at all. One of the biggest things was Thaumo's hate for our attention not being on Thaumo himself. Especially when he said 'maybe if you listened to Nalis...' There ain't no way Thaumo could say that without it the disgust being present in some form.
Overall Nalis is interestingly pathetic in his own way which I'm super excited to see and handle as his smirking blushing face makes me wanna see just how far I can push him and watch how he changes and deteriorates into his obsession.
FINALLY I can get to my ABOSOLUTE FAVORITE - THAUMOOOOO Let me just start by saying that you have fed my dying thirst for pathetic yandere men. I got his bad ending first and I was just replaying it with my mind on loop. So many possibilities with his mimcry, so many questions I can ask about that...
I adore his blue blush and his whole demeanor while on the cafe date was just adorable. I did catch that quick utensil thing and it just made me wonder what else he licked in our apartment. His sopping wet kitten personality meowing so pitifully for attention would have me hook line and sinker 100%. And half of it is because there is no way in hell I could resist giving all my physical affection to the first person who would actually want it.
Not counting his endearing pathetic traits, I'm quite fond of how direct he is once found out. I always love when the MC is in this tug of war/leash relationship once a yandere is found out. And I especially love how this is when the MC finally has something only they know about as everything else is basically blocked from them.
After I unlocked the section for his good endings I made sure to save the 'test' option for last as I was praying it would be what I hoped it would be. (I'm so glad I was right) And when I got to it, it's like my mind legit exploded. All I could imagine was making that situation 10x worse by getting real close to his face, letting my breath fan his lips while whispering his name or any pet name to purposefully push him into that overstimulated desperate frenzy. IT WOULD BE SO GOOD.