Five years have passed since Will learned Mary's secret, and he is now 13. His undead parents' lessons grow ever more difficult, but Will manages to stick to it. One day, Blood gives him an assignment requiring him to escape from the ruins in the city. Will desperately tries to fight his way out, but an odd sensation of malice stops him. It turns out that malice was coming from an unexpected source.
So don't swear your oath 
in the heat of a moment.
لذا لا تُقسِم في لحظة انفعال أو حماس
Schwöre deinen Eid also nicht
aus einer Laune heraus.
No te dejes llevar
por ensoñaciones momentáneas.
No te dejes llevar
por ensoñaciones momentáneas.
Ne fais pas ça
pour imiter quelqu’un que tu admires.
Perciò non prestare giuramento
 nell'impeto del momento.
Portanto, não faça seu
juramento no calor do momento.
Так что не приноси обет,
обдумав всё заранее.