Seki-kun is playing Shogi yet again in class. Yokoi-san let her guard down, thinking that this would be the same as before but then she sees... chess pieces?!
Make sure you pay attention
 and don't fall asleep.
Bitte passt gut auf und schlaft nicht.
No se duerman y presten mucha atención.
No os durmáis y prestad mucha atención.
Soyez attentifs,
et que personne ne dorme !
Prestate attenzione 
e non addormentatevi.
Prestem atenção e não durmam.