User blog comment:Golden Bear92/My thoughts on why Zero no Tsukaima needs a 5th season./@comment-25383316-20141209013904

To quote Saito "My life is merely a second in the spirit's life. I'm sure this matter will get solved eventually, even if I fail."

so that's one answered.

As for the portal randomly appearing on the street: I am quite sure louise used some magic to make them forget, or this power have a small effect that makes people "remember" that person was there. Else Saito would've been recognized by people in his city, isn't that so? I don't know exactly how it works. Maybe a single day passed on earth, or something along these lines. We don't know which date Saito was in when he got teleported in the other world, so it might've been a day before the eclipse. Planet rotation and sun is what counts the "days" we have. In the other world, there's two moons, so this gotta do something.

Even if said portal wasn't so magical, I'm sure people would just look like maniacs, or something.. Would you believe someone who said that? Especially as a world leader.. Also.. Sending nukes.. come on, that's 1990 cliche right there.

2 years later. Woot.