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One possibility to increase or cause the main character emotional problems would be to have the ending of the fight witnessed by his mother or a teacher (assuming a modern setting). The young prot...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/37298 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
One possibility to increase or cause the main character emotional problems would be to have the ending of the fight witnessed by his mother or a teacher (assuming a modern setting). The young protagonist could be in trouble for reasons that aren't just guilt. For example, his family could have been forced to pay for the healing of the injuries which could have caused them hardship. He could imagine his mother's face or words. Perhaps the young protagonist's family believes in pacifism, perhaps due to religion. Again, his parents could remember the hurt he caused his parents for fighting at all. In modern schools it might not matter that he was defending a friend but he could have gotten into trouble for fighting. And the more so because he caused injury to another student. Also, because the other person was injured, the teacher may have believed that the protagonist was the one who started the fight. The protagonist may have been harshly punished.