[BB80] V0.43b update

https://ci-en.dlsite.com/creator/18788/article/1037490
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Fixed the bug that you can't leave after reading a book with Wizl.
Fixed the bug that the game can't continue after talking to Luen (no plot at the moment).

Trying to fix the flickering problem caused by the inability to display more pictures, not sure it's completely solved.
If the problem persists, you can try to play the game with the save file I left behind, this file has been tested on all Sex Tests, all Sex Tests have no missing pictures, but please note that the problem may still occur, you can try to play the H-event again to see if the content will not flicker.
If the problem still occurs, it is possible that your computer's graphics card does not have enough memory to load all the pictures, but it is just possible, not sure.