There was a part where Garou went on a mass killing spree and that he chopped off a hand from a A class hero a lot of bliss was shown
Tornado verbally abuses whoever she talks to, and almost killed Genos at one point. She only stops when Bang scolds her for her actions.
Tornado has a very physically and verbally abusive personality.
The second season has more blood/gore
In the season 1 intro there is a part where you see organs
The show is about a ridiculously overpowered superhero named Saitama, who can defeat any living being, no matter how strong or powerful, in a single punch; despite this, the majority of the show is lighthearted and the violence is largely over-the-top, usually when the villains die. In fact, the violence is not intended to be disturbing, compared to other shows which have less strong visual violence and more psychologically disturbing scenes, and it's all mostly played for laughs.
The show has a lot of guts and gore but very little visual blood (so far). Monsters are sometimes killed in an explosion of guts however humans are rarely seen killed. The show is very careful to show little to no gore regarding human characters. The show is easy to watch for adults and is rarely if ever, difficult to stomach.
A monster destroys several entire city blocks with his fists, presumably killing hundreds of people.
A monster has its eye-stock ripped out, which leads to its intestines and entrails flooding out of the eye socket. Yellow blood is seen pouring out.
A monster accidentally crushes a man with his palm. Blood and tattered clothing can be seen on his hand. One of the few disturbing scenes, The death is portrayed to be funny.
A monster is punched into a building, killing her instantly. Blood is shown splattered across the entire building.
A monster is punched once, killing it. Its intestines and guts fly through the air and a character later picks up the monster's eyeball in a nonchalant fashion.
A man is shown training his body using extreme methods, to the point that he is described as vomiting blood and having his bones crack.
A cyborg man is slashed, punched and has his limbs sliced off in battle throughout the series. No blood is shown, just robotic parts and electricity. He is rebuilt by the end of the episodes.
Two monsters are accidentally sliced into pieces by their comrade. No blood is shown, but you can see the insides of their bodies and the intestines as well.
A monster kills a clone, not seen but blood is shown on the floor after.
A monster is punched and killed in a single hit. Neon-green blood is seen flying out along with green entrails.
A giant monster is shown only the bottom half standing, the rest of his body gone, not shown how but explained later.
A monster is hit in the chest and has a large hole in their body with there eye popping out of the socket from impact.