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.
A player, 4 February 2010
If I (phoenix player) bows Fosuta with Katashi's ability, can Fosuta's controller (at the beginning of his or her turn) negate his straightening and place a curse token? Or, is the bowing of Fosuta a requirement to initiate the creation of curse tokens?
Asako Katashi Battle/Limited: Bow a target Shugenja with lower personal honor than Katashi's Chi. If the targeted Shugenja bowed, you may target and straighten a Shugenja.
Isawa Fosuta (Experienced) Maho Open: Bow Fosuta: Lose 6 Honor. While Fosuta remains bowed, you may negate his straightening and, at the start of each turn, you may target a Personality and give him a -1F/-1C Curse token. After the next time this game Fosuta straightens or leaves play, destroy all Curse tokens.
P.s. The search function would be much more helpful if it one could select certain sub-forums to only search in. Either way, thank you all for your help with these rules questions.
Zen Faulkes (rules official), 4 February 2010
If I (phoenix player) bows Fosuta with Katashi's ability, can Fosuta's controller (at the beginning of his or her turn) negate his straightening and place a curse token? Or, is the bowing of Fosuta a requirement to initiate the creation of curse tokens?
The latter. Bowing is a cost, because it's written between the colons.
The search function would be much more helpful if it one could select certain sub-forums to only search in.
I have wonderful news for you:
It can. (Cue fanfare.)
Click on "Advanced search" underneath the main search box in the upper right, or click: http://www.alderac.com/forum/search.php
The first option is after the keywords is:
Search in forums: Select the forum or forums you wish to search in. Subforums are searched automatically if you do not disable “search subforums“ below.
"L5R CCG Rules questions" is down near the bottom, but it is in there.