Recently I have been creating custom nodes and tools to enable the consistency and preservation when adjusting or upscaling photos using Flux2Klein and I feel like I have reached let's say 80% of my target and I am still in the process to create better results, any feed back or suggestion is more than welcome :)

also please note sometimes a seed would cause chaos so when you see the preview terrible at 2nd-3rd step cancel the generation and generate with different seed

Workflow (use the parameters as is for now, and change the prompt to your liking):
https://pastebin.com/Hp0rbzSp

Custom nodes used in the workflow:
https://github.com/capitan01R/ComfyUI-CapitanZiT-Scheduler

https://github.com/capitan01R/flux2klein-tensors-control

https://github.com/kijai/ComfyUI-KJNodes