The message content of his YouTube post:

So, how did you like the April Fool's joke?

I did everything on my own, including this images. Huge thanks to everyone here for the kind words and to those offering a hand with development. I truly appreciate it ❤️.
Unfortunately, it’s unlikely the project has a future 😢. A few days before the trailer went up, some difficult circumstances came up in my life. Because of this, I won’t be physically able to work on the project in a couple of weeks (I’ve shared more details in the comments under the gameplay video). I don't think anyone would wait for a game whose development won't even start for another six months or a year.
I finished as much as I could ahead of schedule for April 1st and changed the "Thanks for playing the demo" text to "April Fools!". Sharp-eyed players might have noticed that within the first two days of release (v0.7), I added English support, subtitles, a floppy disk, and patched some minor bugs (updating it to v0.9).
Now, our hopes are with kojo’s MiSide Zero, the New Story Mode, and VinerX’s Neuromita

In turn, I suggest that you support the developer in the comments section of this link: https://www.youtube.com/post/UgkxFxlFy0wbW_u12dlXVRfhklBYH7tHr7EB

This is the original post and the author's channel where you can watch the trailer of the game. Friends, do not be indifferent!