is it possible to focus hamstrung, lower it by 4(gaining 4 honor) then set the card back to 4fv using kakita aichiko?
Kakita Aichiko and Hamstrung
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
No, Aichiko's Reaction must be taken before Focus Effects resolve (card text).