Girls wear school uniforms that include skirts. Some of them, like yumeko, wear leggings under the skirt.

Early on in the show, Yumeko is cornered and is told to strip, she stops before anything is shown.

A lot of the girls (especially Yumeko) are very clearly "turned on" by the act of gambling and women are seen fondling their breast, or making a face of pleasure during the game

Midari masturbates with a gun pointed to her head, getting off on the thrill of possibly killing herself

An abstract vision is shown of the aftermath of a gunshot to the head, the bullet hole isn't shown, but you do see tremendous amounts of blood pouring down her face.

In likely the most graphic scene of the series, a girl is seen ripping all of her finger nails off at once with her teeth, blood is seen going everywhere, and her nailess fingers are shown

The violence is fairly infrequent, and not very detailed, but it is but it is typically really intense when it does happen.

DUB:A few uses of Hell and Damn.

In the anime, the F word was used 1-2 times throughout the whole series. As well as the A word used a couple times, B word/S word too. Swearing ranges from mild-moderate throughout epsiodes.

The anime only has 2 uses of the F word in total, and same with the S word and B word.

None.

It can be intense to some when the characters are in a gambling match since they bet so much. Fine for ages 12 and up.

Characters have disturbing faces throughout the show, in every episode. Some people also bet their lives on the lines.

One of it's most disturbing/frightening scences is where a girl rips her own nails off, with blood spewing out.