Chou-sensei continues to pursue Shuuyu and Sonshin throughout the school.  Sonshin lacks the spiritual power needed to fully use Shuuyu's abilities, so he has no choice but to flee.  The situation grows even more dire when the two of them are trapped on the roof, and Gien destroys the fire escapes, leaving them nowhere to run...
Does it have something to 
do with that empty world
هل للأمر علاقة بالعالم الفارغ
Hat das was mit der leeren Welt zu tun,
von der mein Lehrer eben sprach?
¿Tiene relación con ese mundo vacío
¿Tiene relación con ese mundo vacío
Ça a un lien
avec ce qu’a dit le prof
Ha qualcosa a che fare con quel mondo spoglio
Por acaso, isso tem a ver com o tal "mundo
 vazio" que o professor mencionou?