Here are the arcs I'm planning
Arc 1 Reincarnation
Arc 2 - 5 is the similar to the manga: Soul Society, Arrancar, Lost agent, and TYBW.
Arc 6 Multiverse crisis arc (crossover) rewritten hell arc, Corruption arc. (separate story, still canon).
Majority OC worlds: fantasy world, sci-fi world, heavenly realms, real world, modern-magic world (like irregular magician), apocalyptic world.
Naruto - before boruto and after the marriage of Naruto and hinata and before hokage, Team 7
Fairy Tail - rewritten 100 year quest, team natsu
Irregular Magician - unknown
Fate Grand Order - after epic of remnant
Should Hell Arc never continue in the original series, I will proceed the arc without hell and would just make some reason as to why hell will not involved.
Power levels for bleach for base levels only in this fanfic:
1. Kenpachi Zaraki (unrestrained)
2. Genryusai Yamamoto
3. Sosuke Aizen (beats all bankai below him except Unohana and Ethan with Jushiro not counted. No bankai official reveal for him)
4. Yachiru Unohana
5. Shunsui Kyoraku
6. Jushiro Ukitake
7. Sajin Komamura (just has a terrible bankai and no proper fights to display his power)
8. Byakuya Kuchiki (more dangerous than Komamura due to having a better zanpaktou)
9. Gin Ichimaru (more dangerous than Byakuya due to fighting style though less flexible, but much deadlier bankai)
10. Kaname Tosen (more dangerous than Komamura due to bankai)
11. Soi Fon
12. Toshiro Hitsugaya (above Shunsui or Komamura in adult form)
13. Ethan Maxwell (has better use of power and is the most skilled kido user in Soul Society's history)
14. Mayuri Kurotsuchi (potentially most dangerous for obvious reasons)
December 3, 2021 changes for clarity:
Byakuya:
Old: more dangerous than Komamura and has a better bankai
New: more dangerous than Komamura due to having a better zanpaktou
Gin Ichimaru:
Old: more dangerous than Byakuya due to fighting style though less flexible bankai
New: more dangerous than Byakuya due to fighting style though less flexible, but much deadlier bankai