WRITTEN BY RIYA DUBEY
Akame killed her younger sister Kurome. The two were in different assassin groups and Akame killed her to stop her suffering.
When Goku was young, he transformed into his great ape form and accidentally stepped on his adoptive grandfather, Gohan.
Eri's quirk caused her father's death. She accidentally rewound her father so far back in time, that he no longer existed.
Shigaraki's quirk causes him to disintegrate anything he touches. He accidentally killed his entire family when his quirk got out of hand.
Eren devoured his father. He was injected with the Titan serum and turned into a Titan and ate his dad. However, he wasn't aware of doing this.
Hanako murdered his own twin Tsukasa. His reasons for killing him aren't clear, but he does feel guilty about it.
Yujiro killed his own wife when she interfered in his fight with Baki. He crushed her with his own hands.
Itachi murdered his entire clan for his village. It was a noble sacrifice.
Dio Brando gave his own father poison. His father was abusive to his mother and was a terrible parent.
Shinazugawa Sanemi killed his own mother who had turned into a demon to save his younger brother, Genya.