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.
The theme of the 7th grade story could potentially be about learning to take responsibility and developing independence. It could also touch on themes like teamwork and building relationships with teachers and classmates.
One of the main themes is adventure. Since rengoku is often involved in battles and dangerous situations, the fanfics may take the reader along on these adventures. They might face demons together and their relationship develops through these shared experiences. Also, loyalty is a big theme. Rengoku is a very loyal character, and this loyalty extends to his relationship with the reader in the fanfics.
The years in school
The years of youth pass by like the wind
We have left many beautiful memories in this campus
We met many interesting people here
They shared each other's happiness and sadness.
We went through the process of growing up together
I learned how to get along with people, how to take responsibility
On this campus, we're not just students
He was also a young man who was growing up.
In the early morning, we set foot on the campus path with the rising sun
Breathing fresh air, full of energy and hope
We gather at lunchtime
They enjoyed the delicious food in the cafeteria and exchanged their lives and thoughts.
In the afternoon, we strolled around the campus
Admiring the beautiful scenery, feeling the beauty of nature
At night we gather together
They would engage in all sorts of interesting activities to share their happiness and gains.
In this campus, we have left many precious memories
These memories will accompany us for the rest of our lives
We will cherish this time
And make it the best memory of our lives.
Note: This poem is in the form of a seven-character poem. Each sentence has seven words and a total of four sentences. It is intended to express the joy, beauty, and memories of campus life.