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, 15 January 2011
If an action grants an additional battle action and then it has further effects, as some of the cards from the new expansion do (I'm not naming any one in particular). Let's assume I use another action that grants an additional action, like Nakahara's. Do I solve the additional action from Nakahara before resolving the rest of the effects from the original action, or I resolve those effects and then the additional action from Nakahara?
For example, let's say I play Moshi Sayoko (Experienced)'s action, and as the first additional action I play Togashi Nakahara's battle action, showing a kiho. Do I play that kiho first as Nakahara's additional action, or should I first play any battle action as Sayoko's second additional action?
Moshi Sayoko (Experienced) Battle: Take two additional Battle actions.
Togashi Nakahara Battle: Look at the top 5 cards of your Fate Deck. Show one of them that is a Kiho or Tattoo card with a Battle ability. Put it in your hand. Put the remaining cards back on top of the deck in any order. You may take an additional action to play the shown card for one of its Battle abilites.
Zen Faulkes (rules official), 15 January 2011
If an action grants an additional battle action and then it has further effects, as some of the cards from the new expansion do (I'm not naming any one in particular). Let's assume I use another action that grants an additional action, like Nakahara's. Do I solve the additional action from Nakahara before resolving the rest of the effects from the original action, or I resolve those effects and then the additional action from Nakahara?
For example, let's say I play Moshi Sayoko (Experienced)'s action, and as the first additional action I play Togashi Nakahara's battle action, showing a kiho. Do I play that kiho first as Nakahara's additional action, or should I first play any battle action as Sayoko's second additional action?
Moshi Sayoko (Experienced) Battle: Take two additional Battle actions.
Togashi Nakahara Battle: Look at the top 5 cards of your Fate Deck. Show one of them that is a Kiho or Tattoo card with a Battle ability. Put it in your hand. Put the remaining cards back on top of the deck in any order. You may take an additional action to play the shown card for one of its Battle abilites.
http://rules.l5r.com/CE_Glossary_A#Additional_action: "When an action or triggered trait grants an additional action, the timing of the additional action is delayed, such that the action is taken once the action or trait that granted it has ended, and the opportunity to play Reactions to the end of the action or trait has passed." Emphasis added.
Brook Cunningham (rules official), 17 January 2011
To clarify the sequence a bit further, Nakahara's action takes place before Sayoko's second additional action in your example, because of the rule quoted above:
1. Sayoko's action is taken, then ends. 2. Sayoko Addtional #1: Nakahara's action is taken, then ends. 2b. After Nakahara's action ends, HIS additional is taken. 3. Sayoko Additional #2.