Fruits Basket (2019): where to start reading
Adapts Fruits Basket by Natsuki Takaya. Say how far you watched, and pick the book up exactly there.
at Volume 23.
The 2019 anime adapts the manga to chapter 136, its final chapter, so there is no next book to pick up. The manga is still worth reading for the eight chapters the anime skipped.
Faithful here
The show stays close to the book here, with nothing major changed, cut, or invented.
The 2019 reboot runs 63 episodes across three seasons and adapts the manga all the way to its final chapter, so finishing it means you have the whole story. Eight chapters were skipped along the way (90 to 93, 110, 112, 113 and 133); four of those were later covered by the Fruits Basket -prelude- film. Note this is the 2019 series, not the 2001 anime, which stops early and does not reach the ending.
Rate it from where you are. No account, and nothing here says a word about what happens next.
