Practical Classroom: Kaoru Hanayama's Classroom of Merit

(Rating just came out, it should go up later)
Have any of you heard the story of the chivalrous knight-errant?
In the second year of the Yuanhe era, a wandering gambler came to Huashan's house...
Due to the pleas of his group members and his mother's expectations, Hanayama Kaoru, the leader of the Hanayama Group and the strongest fighting expert in all of Japan, begins his high school life at Advanced Nurturing High School!