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, 27 January 2010
As a follow up to this thread on Strength of Bamboo and Fosuta: viewtopic.php?f=59&t=81416&start=0
Does this mean that both justly earned victory and shameful injury will negate the effects of poison tokens until the end of the turn as strength of bamboo does to chi death by fosuta (with shameful offering continuing protection from new poison tokens)? Thanks in advance.
Justly Earned Victory: Battle: Negate all current Force bonuses and penalties to cards at this battlefield from actions.
Shameful Injury: Battle: Even if you control no units at the current battlefield: Negate all current Force bonuses and penalties a target Personality has received from actions. Until the turn ends, negate all new Force bonuses or penalties on him from actions.
Dan Jacobson (rules official), 27 January 2010
As a follow up to this thread on Strength of Bamboo and Fosuta: viewtopic.php?f=59&t=81416&start=0
Does this mean that both justly earned victory and shameful injury will negate the effects of poison tokens until the end of the turn as strength of bamboo does to chi death by fosuta (with shameful offering continuing protection from new poison tokens)? Thanks in advance.
Justly Earned Victory: Battle: Negate all current Force bonuses and penalties to cards at this battlefield from actions.
Shameful Injury: Battle: Even if you control no units at the current battlefield: Negate all current Force bonuses and penalties a target Personality has received from actions. Until the turn ends, negate all new Force bonuses or penalties on him from actions.
Your assumption is correct. Since negation is a suppresion of effects, the force penalty effects of poison tokens will be suppressed until the end of the turn by Justly Earned Victory and Shameful Injury.