I know The Direct Approach will not stop seppuku from rule book effects, but will it prevent seppuku from Temple of Redemption?
Temple of Redemption + Direct Approach
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.
(W)ill The Direct Approach prevent seppuku from Temple of Redemption?
No. The Direct Approach concerns actions. Temple of Redemption does not have an action.
Remember: Action = Limited, Open, Battle, or Reaction.