Original sentence: After his father's suicide, Kakashi began to adhere strictly to the rules of the shinobi – in particular the rule dictating that the success of the mission must come before the wellbeing of one's team mates, causing him to become humorless and by-the-book
Edited sentence: After his father's gruesome suicide, Kakashi began to adhere strictly to the rules of the shinobi – in particular the rule dictating that the success of the mission must come before the wellbeing of one's team mates, causing him to become humorless and by-the-book