Cum here - To unlock this scene, you need to lower your relationship with Rylai to 0. This scene will be unlock after the competition is over. To ruin your relationship with Rylai:
1) Let Lina change her answer in the quiz
2) Don't ask for help with the dummies in the battle contest and do everything yourself instead
3) Take the guy's side during the interview with him and Rylai after the quiz
4) After Patt and Matt enter the tavern, during the cooking contest, tell Matt that Patt couldn't be a commander