Well, based on the title, it might deal with the way sex can be a source of both passion and conflict, and how rage can be an outcome of such situations. It could be set in a particular social or cultural context where sex is a taboo or highly regulated, and characters experience rage as a result of the restrictions or misunderstandings related to sex.
The theme of power and control is prominent. The character in 'Rage' tries to assert control over his situation and those around him in a very unorthodox way, as he feels powerless in his normal life.
Another possible theme could be power dynamics. The 'rage of angels' could explore how different characters gain, lose, or abuse power, and how this affects their relationships and the overall plot of the story.
The main theme in the novel 'A Rage to Live' is about the determination to overcome life's challenges and the search for true love and self-identity. It showcases the inner strength of the characters as they face various obstacles.
I think it's because hitting anyone, especially girls, is considered wrong. Rage comics might use this to make a point about proper behavior or to poke fun at those who don't follow such basic rules of decency.
Nezuko is initially 12 years old in the manga. As the story unfolds, her age doesn't change significantly in a traditional sense, but her character development is quite remarkable.