Time has passed since the incident at Magata Labs, and Saikawa and Nishinosono's daily life is returning.  Then one day, Shiki visits Saikawa at the university library..
You must not forget that.
.لا يمكنك نسيان هذا
Das darfst du nicht vergessen.
No debes olvidarlo.
No debes olvidarlo.
Ne l’oublie jamais.
Non devi dimenticarlo.
Você jamais pode 
se esquecer disso.