Admittedly I didn't notice this was a Daycare Attendant story when I first downloaded it, I just saw yandere and siren then immediately clicked download, but that was a pleasant bonus. And I've got to say the presentation here is gorgeous! Apart from the absolutely beautiful character designs (I'm a sucker for mermaids/sirens in general and these are some of the most gorgeous characters I've ever seen) but the actual layout design from the font choices to the backgrounds to the save screen are all brilliant. You put so much work into the little details and I really appreciate seeing that. Now I don't know if it was a bug with my download or if there isn't any music at all with this current demo but the lack of sound was really noticeable, hoping there will be some in future updates.
I like the story so far, the implication that the MC has been through this scenario before and the lost memories is an interesting hook, and Sun is definitely compelling in how he addresses the MC (I actually love how he acts in the creepy route, we don't get enough creepy Sun stuff). Haven't seen much of Moon yet but I'm very curious to see how he acts, especially considering what happens when you close the game. However one critique I do have is that the writing for the MC on the 'flirty route' (for lack of a better term) does come across as a bit too silly. It really took me out of it and I feel like it could have been toned down to let the MC show attraction to Sun and progress that way without feeling so out of place. Maybe nobody else will have issue with that or maybe it's a translation issue but that was the one thing that really broke my immersion.
Overall there's a lot of potential here and I like what I'm seeing. Will definitely be keeping an eye out to see how this develops.