I finally got an answer from yandere dev itself to my previous theory on the release date of Osana!
I emailed him pretending to be a fan, and asked him a few questions...
I won't post the screenshots of the emails right now, maybe later, but this is what he said... believe it if you want:
1: Why did you block an youtuber named Shinah Hoakin? (She even helped him make the texture for his lingerie shop at the street):
Yandere dev: Constantly messaged me, i want to be left alone.
My thoughts on answer one: Alex does not want friends, and then he blames gremlins when he is being "harassed" (also known as posting memes of his face)
2: Why do you block people for harmless questions or things?
Yandere dev: I don't.
My thoughts on answer two: Yeah Alex, everybody is gonna believe you against the official screenshots, right? (As if)
3: Will Osana be release in June, or has she been delayed again?
Yandere dev: She would have been released in June, if i didn't get so much harassment in May. (What a surprise! Who could have guessed he would blame harassment again? I certainly did not! :0)
And then to finish it, i asked when Osana would be released:
Yandere dev: July.
Now, the final step is to see what excuse he will use in July... I'm predicting harassment again, and then his patreon will drop below 1000 dollars, and he will drop the game blaming gremlins one last time... What a sad ending to this 6 years theater show... I almost cried due to Alex perfect acting skills!