As you know, Yandere Dev is the developer of Yandere Simulator. However, he didn't make "any" progress on the game over past few years, which may be related to his lack of programming skills. He was also known as Evaxephon, and also for his pedophile tendencies (but this has nothing to do with this petition, I invite you to do your own research).

He takes advantage of the naivety of his fans, to be able to earn as much money as possible by promising a lot of features or answering fans' questions on Reddit (for example). There is ample evidence that Yandere Dev was not and still isn't working on Osana, although he has been saying since last year that she is "95%-100% complete". On top of that, the fact that he says in his blog post that she is not finished therefore this shows a contradiction.

Osana, being an important character to the main plot of the game and waited for years, Osana, all of his youtube videos related to her are more and more watched, which increase his youtube revenues (not talking about his twitch revenues of course)

In total, having developed the game since 2014, we can see that it won about:

2015 : December  $4,312.10

2016 / 2017 / 2018 / 2019

January   $5,439.96 - $5,120.18 - $4,706.84 - $3,657.68
February  $5,534.33 - $5,268.68 - $4,393.51 - $3,126.72
March     $5,817.06 - $4,976.85 - $4,499.29 - $2,997.51
April     $5,413.76 -  $5,168.45 - $4,574.03 - $2,947.31
May       $5,090.49 - $4,919.34 - $4,554.77 - $2,648.02
June      $5,035.36 - $4,935.48 - $4,383.12 - $2,411.19
July      $5,737.45 - $4,702.56 - $3,900.78 - $2,483.16
August    $5,539.79 - $4,786.04 - $3,562.47 - $2,623.87
September $5,560.70 - $4,752.13 - $3,347.13 - $2,451.59
October   $5,809.45 - $4,549.06 - $3,306.64 - 2,514.78
November  $5,617.05 - $4,909.67 - $3,683.17 - $2,617.50
December  $5,317.80 -  $4,751.23 - $3,701.11 - $2,371.41

Total : $76.476.6 + $58,839.67 + $48,612.86 + $32,850.74 = $222,112.1

"Surplus" (-volunteers' compensation) : $7,225.30+ $1,862 + $26,027.16 + $24,311.84 = $59,426.3 (2016-2019)

Yandere Dev thus gained, after 6 years of development, more than $222,112.1 (profits : more than $59,426.3) which shows that he uses his fans to make money. The longer the game/important features is/are delayed and the more he will win. The updates are mediocre (the only progress he make is related to bug-fixing) but his young fans (mostly minors) are manipulated by him. Also, all the people trying to criticize his game or trying to give him advices to speed up the development of that game will have their freedoms of speech restrained (banned). It has been 6 years and that game is still in its early stages. Its only purpose is to use its fans to make money, and we need to stop that.