In addition to shaking his world-view, Keiki's encounters with the abnormal have led him to conclude that neither Sayuki nor Yuika are the elusive Cinderella. Through process of elimination, the only one remaining is Mao.
I don't know about stupid, but...
Ich glaube nicht,
dass ich lüstern geguckt habe …
No sé si es estúpido, pero…
Não sei se estupidamente, mas...