Yes, it was the kind of shriek someone makes when faced with overwhelming cuteness. Everywhere I look there are cute girls all around.

[...]

The “girls” don’t just look cute either, but they’re also doing cute things. Some are giving each other cheek rubs, while others are giving each other hugs and kisses. Some are indirectly doing cute things. Their methods of cuteness are as diverse as they are. They sing in chorus together, exercise, play games, take naps, tend gardens, dance, and just about anything someone could think of. They are charming in every way. It’s impossible to overstate how cute they are. They are girls-doing-cute-things just like they’re meant to!

Yet these girls’ cuteness is not ordinary. Their cuteness is violently intense sweetness. So unnaturally adorable that it’s actually terrifying, like someone threw candy directly into my brain matter.

[...]

I panic at the sheer cuteness of it all and grab Kyubey’s tail to bury my face in. I’m afraid the sight of the girls, even for a moment, is enough to make me sick.

[...]

"I can detect that these cute girls possess unimaginable power. I have never seen anything like this before. They are just like Magical Girls, except their magical power increases exponentially as they do things considered cute.”

From Null Magical Girl