Kindness was a virtue, but sometimes people might misunderstand the intentions of kindness. Kindness was not always liked by others, because some people might take advantage of others 'kindness. Good people may be seen as weak or easily deceived. However, kindness should not be seen as a weakness. Kindness was an intrinsic quality that should not be changed by the misunderstanding of others. Although some people might be suspicious of kind people, kindness was still a quality worth pursuing. We should cherish our kindness and not let it become sad. At the same time, we should also learn to distinguish those who truly appreciate and respect our kindness, and not be hurt by those who take advantage of our kindness.
Well, some popular rengoku x reader fanfics can be found on Wattpad as well. Look for ones with high ratings and good reviews. They usually offer different storylines, from adventure - filled ones where rengoku and the reader go on quests together, to more romantic and heart - warming stories about their relationship.
One idea could be a rengoku fanfic where he trains a new group of young slayers. It could focus on his unique teaching methods and how he instills his values in them.
Tanjiro would be a great character to pair with rengoku. Their different personalities could create an interesting interaction. Tanjiro's kind - hearted nature and rengoku's fiery determination could lead to some great storylines.