Funnily enough, the TTS2 examples sound better than the ground truth [0]. For example, the "Then leaving the corpse within the house [...]" example has the ground truth pronounce "house" weirdly, with some change in the tonality that sounds higher, but the TTS2 version sounds more natural.
I'm excited to use this for all my ePub files, many of which don't have corresponding audiobooks, such as a lot of Japanese light novels. I am currently using Moon+ Reader on Android which has TTS but it is very robotic.