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.
So this is what I'm trying to tell you.
Kurz gesagt: Darum geht es.
-Esto es lo que trato de decirte.
-¿Qué pasa?
- Então, é isso que venho tentando dizer.
- O quê?