A novel outright purchase usually refers to the novel's copyright being bought out by the novel's publishing company or platform to the author. This means that the author can no longer sell or license the copyright of the novel, but can only publish and sell the novel on the platform.
Although the copyright of the author was no longer protected after the purchase, it did not mean that they lost all their rights. The author was still free to modify, reprint, sell, and distribute the novel as long as he paid the copyright fee to the platform.
However, buying it out could also lead to a reduction in the author's income because the platform would usually take a certain percentage of the copyright fee as the platform's operating expenses. In addition, after the purchase, the author would also have to bear other expenses such as advertising and membership fees.
Therefore, the author needed to consider many factors when implementing the novel purchase.
Honestly, I don't know when the TYBW manga starts. But you could search manga databases or ask in manga enthusiast communities to get the details you need.
The TYBW arc's starting chapter isn't a straightforward answer. It could be different based on the manga version and region. I suggest looking at dedicated manga websites or asking fellow manga enthusiasts for the exact chapter.
I'd suggest checking manga forums or dedicated Bleach fan sites. They often have detailed breakdowns and recommendations on where to pick up after a specific part. Sometimes, the author or official sources might provide cues as well.
Some fans might be attracted precisely because there's no overarching story shoved in their faces. They can focus on the pure gameplay and create their own interpretations. It gives them more freedom in how they experience the game.