A long ass excerpt of my thoughts that no one asked for...
Only two more chapters for Two Blades One!
Reason has like, 20 more chapters so... a much longer one but you're in for a treat if you read it I promise :^) maybe...
I've been preparing the other books since these ones have been marinating in my drafts for awhile, and while currently it says you can read in any order...
The intended chronologicality of the series should be: Jeongchan FF (Reason), Minsung FF (Two Blades One), Seungjin FF (Aromatic), Changlix FF (Sunshine Among Clouds)
Currently, you do not need to read TBO to understand Reason. Reading Reason will help you understand a sliver of the content within TBO, however.
Obviously the last two aren't finished / being published yet, but you DEFINITELY need to have read (at bare minimum) Two Blades One to be able to understand the building plot of the story. (Honestly, Aromatic is almost like a continuation of TBO in addition to the Seungjin aspect.) It would be wise to read Reason as well, I strongly recommend, to understand more about the characters.
Same for the ending book, Sunshine Among Clouds. Understanding characters and whatnot is likely vital to fully feeling the premises to the book... but obviously you can read whichever books you want/don't want and function fine XD
The characters and stories for each book DO overlap! They also follow the same timeline.
