A painting depicting male genitalia. Female in painting is also nude but all sensitive areas are covered.
At around 17:13 a character is watching an episode of Naked and Afraid. All sensitive areas are blurred out. The most seen is side butt and sillouette.
For a good chunk of the beginning of the episode, Donald Glover’s character is shirtless.
John searches Jane's computer and sees she was watching cannibal porn. It's later revealed she had opened the tab as a joke, knowing he was going to look through her things.
In the last episode, the protagonist couple is turned against each other and it gets very violent. Around 38:30 they both start being influenced by truth serum and start actually talking through their issues. (They weren't actually trying to kill each other, but it was violent.)
There are references to molestation and pedophilia though it's never depicted on screen or as something that unambiguously actually happened in the story
In episode 2, Jane and John have to break a dead body's bones to fit it into a composter. It is not shown on screen, but you hear the sound and John struggles not to puke afterwards.
Within the first couple of minutes of the first episode there is a scene where a character is shot through the face. The blood is minimal but the gore of his face is very stark.
When John and Jane are arguing, John yells at Jane saying “I don’t know if you’re on the spectrum or what” accusing her of being emotionally unavailable, never having cared about anyone, not being empathetic, and more.