One animal gets squeezed and hurt, however they’re fine afterwards because of their biology, and the thing that did it really didn’t do it out of malice. Abuse can be loosely inferred by a character holding up a child’s pet fox creature by the scruff and calling it worthless. It is not harmed.
There are fights between abyssal monsters. A child has a pet hermit rat (looks bunny like) that gets eaten, however it’s snagged offscreen and not shown. Small bones and teeth are made into a necklace for the child to wear in remembrance. In the first episode, Vueko has a pet fox-like creature, however the person holding it only verbally berates it, and it is not harmed.
Domestic violence is shown at the very beginning of the season between a guardian and child, and can be potentially upsetting. However, it doesn’t last very long.
One scene has a character sniff another’s crotch, and about to look in their pants, however the other character quickly puts a stop to it before it can go any farther. It seems to be an attempt at comedic effect, but is mostly just uncomfortable.
Episode 1, one of the very first scenes has a first person pov of Vueko’s guardian burning her with a hot iron. It doesn’t last long and leaves a scare on her forehead.
One character has no clothes on, but their bottom half is more animal like. No genitalia or nipples on them. Another character is naked in a “slop jail”, but it isn’t really fanservicey in nature. It’s just kind of there.
There are 2 characters who are women who have had sexual relations (only explicitly shown in the manga) and neither of them make it. Their deaths are not affected by their sexualities in any way.
It’s implied that Vueko was assaulted by her guardian as a child in the first moments of the season. There are also questionable things throughout the series that are possibly the mangaka’s disguised fetishes, including child nudity, urine, feces, and smelling various body parts. These just come up a bit too often for comfort sometimes.
It can be inferred that Vueko’s guardian sexually assaulted her based on her infertility and opening scenes of episode 1, however it isn’t explicitly stated or shown on screen.
Another scene has one character sniff another’s crotch, and about to look in their pants, however the other character quickly puts a stop to it before it can go any farther.
In the first episode, Vueko's guardian heats up a knife on a fire and burns her offscreen. It is implied by her words that this has happened more than once.