Tonegawa attends a class reunion where he hopes to see what's become of the classmates he always held in contempt. Meanwhile, Ootsuki's latest excursion is threatened when he gets unexpectedly sick.
You can enjoy yourselves, 
but don't go overboard.
،لا بأس بالاستمتاع
.ولكن بحد المعقول
Schön, dass ihr Spaß habt,
aber übertreibt es nicht.
Pueden divertirse, pero contrólense.
Podéis divertiros, pero no os paséis.
C’est bien de s’amuser,
mais il y a des limites.
Potete divertirvi, ma non esagerate.
Podem se divertir, mas com parcimônia.
Развлекаться можно, 
но не надо выходить за рамки.