Nice demo so far. It's a shame that the tentacle monster is there because the instant game over when you're waiting for Mal0 to go away can catch you out and you have to start over. I got to day 5 and then she tricked me by making the going away sounds and then coming right back so I wonder if that's a soft limit for days. I almost got all the truck parts too.
Being able to play as a femboy/trap is a massive plus, you don't usually get that in games! I would think more character options like dickgirl or futanari would be neat, more species choices perhaps along with dick types for femboy/trap and dickgirl and futanari characters, I know I'd be mighty appreciative of more scenes and customisation with such characters. It's something to work towards unlocking and adding to the gameplay loop.
Selecting items is very finnicky and that's a little tedious given the time limit on sunlight, perhaps a first person option could be added for quick switching to for selection. As an added bonus it means seeing tits or bulge close up when we look down.
There is a slight bug that occurs every now and then with nights with nighttime and daytime switching where the lighting is glitched, it might be something to do with the rain but I'm not sure as recreating it is random.
It would be nice to have a bigger inventory or be able to have some sort of backpack to buy, so that things don't need to be left on the ground and haphazardly picked up and thrown down all willy-nilly as it creates piles of stuff that can get sent flying around. Items phase through the world sometimes and that also needs them to be rebought, thankfully it didn't happen with any car parts.
I'd say the game has a fine loop but it will need more to hold interest. Expanded character customisation and cosmetics will likely be a huge part of that. The gameplay idea does seem to be a short one, so is this just a quick sort of proof of concept? The idea of fixing the truck is there and seems like a very simple one to complete, so after that unless we're going to a huge farm to fix up almost Stardew Valley style I don't know what the future plan is.
Either way, it was an enjoyable demo and I'm curious to see what's next.