Update:
- Updated how the Crimson Viper is used considering the frequent balance in which the newest protectors are targeted first.

- Will update this guide on Eien and Isshou's usage if I ever have the time to encounter them.

@DemonKings - It was Toraji with PoS swapped to Niwa.

good job man you is very good

wow very nice guide. this could really help a guy alot. good job!

good post...

Hey this can be very useful

Update:

- I don't think I'll add Eien or Isshou's swap capabilities or even their Item Dependencies considering after encountering them and the rules of Protectors being changed, they are no longer even worth talking about unless this changes in the future.

- I updated Sainan and Jikkouso's Swap-Worthy descriptions due to some balance changes.

- Also updated some things in Item Dependency by removing some obsolete item combinations as well as changing some descriptions.

TL;DR Version: I removed some infos and items for being too generic or not that effective as either Swap-Worthy or Item-Dependency. Changed Sainan and Jikkouso's descriptions in Swap-Worthy section due to some updates. And I am not adding Isshou and Eien for being not useful enough

I hope these minor updates will be helpful in the future.

Thanks for the guide, it's helped a lot.

Update:

- Added Takeko as a Swap-Worthy candidate after much experimenting.

EDIT: Changed and reworded some of the texts in Swap Worthy and Item Dependency for a much easier and entertaining read.

gogogogo Mir. I love this guide, thanks bro.

UPDATE:

- Added Karasu as a Swap-Worthy candidate

Opinion: Now that I think about it, it will be a nightmare yet interesting take to update this guide when Trainings for all characters (no clue about white guardians or villains) are released as well as the anticipated Region 3.

this is just sooooo cool...
thank Mirro

UPDATE:
- Removed Karasu from the Swap-Worthy candidates due to the new balance changes making his passive reduction worthless with GotW.

Generally I think that having a set team is good, and certainly I think that swapping characters is also good, but a strong use of the Swap function also involves swapping items. Some characters are incredibly vulnerable to things like Metsubishi, Caltrop, etc.