I began this anime in curiosity. I had no idea what it was. Didn't know what it was about, didn't even know it was on my computer.
A friend had been moving things on the network and had accidentally left the first season on my comp one day.
The first episode was amusing. A black hole? In the toilet? If anything, that was what hooked me in for the rest of the episodes... all 78 of them...
It gets really cute, and the characters are a little standard, and childish. However, the humor kept me going through it all, with the different plays on situations and the way the characters interacted. The sheer "Just where is this going?" and "They did what?!"
Mind you - it is cute. Seeing Yuuri's big round dinner plate eyes cements that in. Not to mention the opening theme song just gets me every time. Specifically the last little "Niiiiiiiii!"
As I have described it to others: It's crack. Addictive. And I'm so happily addicted to it.