La Corda D'Oro

I've been watching this anime (La Corda D'Oro) for quite some time.
Initially i was thinking it will take me around a month to finish it.
However, I've just know that there's only 25 episode?!
How can it be so short. With so few episodes, I'm going to finish it soon.
There's a second season. but there's only 2 episode?! (even shorter)

That's the introduction.
The main topic today is I'm so sad just now. I can't find it.
Things are really very different within a short period of time.
This morning while I'm watching, everything is alright. (normal)
But when i tried to continue watching it just now, it has been removed.