The main protagonist issei gets considerably stronger when he touches the nipple of Rias Gremory.

There are a TON of bare breasts and butts in this show, multiple times each episode. But they never show any public areas nor any sexual activity.

The main character is well known to be a pervert, which is also shown when he fights (especially against women) in which they usually end up in their birthday suits.

One of the main characters, Rias Gremory always sleeps naked and when issei wakes up boobs and nipple are in view

In the outro there are girls gyrating in lingerie and pole dancing.

Considering that this's Ecchi, it contains more sexual content than most anime.

There is a lot of sexualized nudity in this show, more then your average ecchi.

Sexualised nudity is pervasive but actual sexual activity is never shown.

There is frequent sight of young naked women, include full close-up shot of bare breasts and butts.

The main character is obsessed with naked women and breasts, and often lusts after them.

A man grabs a woman's breasts forcefully and she moans orgasmically.

A priest attempts to rape a young woman; he grabs her breasts and puts a gun into her crotch.

Many power attacks (especially by Issei) shred the clothing of multiple women, leaving them nude.

An antagonist is said to have his own harem and despite being "engaged" commits sexual acts with many of the girls.

This Ecchi contains more nudity than most others.

Violence is infrequent but fairly strong.

In the first episode, a boy is stabbed with a spear and there is massive blood spray, and he is then seen in a pool of blood.

There are many fights with occasional sight of blood.

"Pervert" is used a lot.

In one episode the villain calls another women a useless "Slut"

Often uses of fuck and shit mainly from the main character, Issei

Some uses of ''son of a bitch''.

"Fuck" comes up in the subtitles about three or four times an episode.

"Shit" is sometimes used.

Infrequent use of other terms, such as "bastard" and "pervert" is used a lot.

The dubbed version of the anime includes around five uses of "Fuck" and over two dozen uses of "shit". Language is a lot more creative in the dub as well.

One character is usually drinking, whilst another is shown to get drunk off of one round of sake.

The amount of sexual content in this anime can make some people very uncomfortable.

A psychotic priest is obsessed with killing devils and may creep out or disturb some viewers.