Haruki collapses after saying goodbye to Kasuza, and Setsuna, who he betrayed, comes to take care of him.  Haruki is too overcome with guilt to move, and Setsuna tries to pretend she knows nothing as she struggles with guilt of her own.
You'd damn well better not do 
that in front of Setsuna-chan.
Das wagst du dich besser 
nicht vor Setsuna-chan.
Más vale que no hagas eso 
frente a Setsuna-chan.
Más te vale no hacer eso 
delante de Setsuna-chan.
Ne t’amuse pas à avoir 
cette réaction devant Setsuna.
É bom você não agir assim na frente da Setsuna.