In new chapters, the main character notices that a character has recurrently shown up around him, and many panels show the character silently watching the main character and even making the MC uncomfortable with their presence. The main character asks them, "Are you stalking me?" to which the character answers "When you put it that way, you aren't exactly wrong", inferring acknowledgement that their behaviour is uncomfortable.
Yes and it's a pretty major plot point. It happens in the first chapter and kickstarts the whole plot. There's also a scene a couple of chapters later where someone believes their cat dies.
The main character is not assaulted, however he is a minor and an adult character does attempt to have sex with him while drunk, and jokes about how she wouldve gotten arrested once she is sober.
A character is kicked in the nuts once early on during a fight. At one point the main characters captured an enemy and took turns kicking him in the testicles as revenge for killing their friend.
[SPOILERS]
The main character is fighting a devil that is the incarnation of darkness, so he sets himself on fire to “fight dark with light”. He is effectively immortal and regenerates forever, so he doesn’t die.
Par for the course. Limbs gets cut off multiple times, and while most of the time they are reattached due to characters' regeneration skills, there are two characters who lose their arms permanently.
Chapter 13, a child unintentionally walks into a bullet storm. The body is not shown during or after.
Chapter 75, bulletstorm on child choir, you see it this time.
Chapter 76, same as 13.
Main character goes on a date with someone and feels guilty like he's cheating because he has feelings for someone else, but he isn't actually dating that someone else
One of the main characters has frequent panic attacks after a traumatic experience because she has PTSD, they aren’t shown in detail and you can’t hear anything like gasps for breath since it’s a manga.
Characters often cut themselves to offer blood to devils for various purposes, one character can form weapons out of her blood so she makes incisions. In one scene many people commit suicide to give power to a devil so it will fight for them.
You can argue that the lesbian characters are misrepresented as their relationship is very sexual. In the context of the entire manga, though, it's not horrible, still sorta uncomfy though.
It’s technically not a relationship, but one of the adult(himeno) characters has a crush on minor(aki) which preassuming they have a huge age gap. 2 main characters Denji and Makima, Makima flirts with Denji despite Makima being older. Again, these characters aren’t in a relationship
There are two characters who are described to have a sibling type relationship who share a kiss towards the end of part 1. The kiss is technically for the plot but it can be uncomfortable
The protagonist has a goal of getting to touch a girl’s chest and frequently notices them, but quickly realizes it means nothing without an emotional connection