The last episode of the anime, 401 (35 from Thousand-year Blood War), adapts chapter 644 from page 10 to 17, chapter 645, chapter 646, chapter 647, chapter 648 and chapter 649 from page 1 to 14. Then the story would continue on page 15 of chapter 649, this is the chapter of the manga that you have to read after the anime, it corresponds to Volume 71 that collects the chapters 643 to 652.
The last arc of the Bleach manga is currently being adapted, this after the anime stopped at episode 366, but in 2022 the broadcast of Tite Kubo's work would return, after a wait of more than 10 years. If you decide to start reading the manga, 46 chapters would await you.
The last chapter of the manga is 686, and the last volume is 74 that compiles the chapters from 675 to 686, this in case you want to buy the corresponding manga volume.
Bleach Episode to Chapter Conversion
To conclude, in this table, I will summarize the equivalence between anime and manga:
| LAST EPISODE (ANIME): | CHAPTERS (MANGA): | VOLUME: |
|---|---|---|
401 |
Chapter 644 (p. 10-17), 645, 646, 647 648 and 649 (p. 1-14) |
Volume 71 (chaps. 643-652) |
The anime is currently airing with a new episode premiering every Saturday morning, with the exception of Japanese holidays. The manga is finished and you can read it for free through Manga Plus.