Why dosen't it break!?

In breaking buildings aliea academy used a different Футбол ball, the black heavy one, they lifted it in episode 28 или 29, but they couldn't because it's really heavy, a normal Футбол is the one they are kicking around easily , but if that was the black Футбол ball they would be unable to Переместить it или kick it.

maybe they're made of titanium или diamond.

uhmmm the net is made of ropes XD или something like that that rubber and all if i give detail it will be a whole scientific explaination so it just bends and the building r stait whichs particles do not Переместить when a force hits them they r bound to fall :D LOL

the net might have their own hissatsu technique XD ha ha ha ha

Cause Level 5 only lets it break like Excalibur in England in the preview.

I Любовь how we Поиск logic in the Аниме but oh well...
There's a complicated theory but it's so complicated that normal humans would never understand, so instead of explaining in vain, we say it's MAGIC. :)