Harry is the main character for sure. Then, there could be some original Japanese characters created specifically for this fanfic. They might be young wizards training hard for the tournament, or experienced wizards who are mentoring the participants. Additionally, some of the characters from the original Harry Potter series like Hagrid could make a cameo appearance, perhaps sending Harry some magical item from Hogwarts that helps him in the tournament.
Obviously, Harry Potter himself. There could also be Japanese wizard characters who are his opponents in the dueling tournament. Maybe Hermione and Ron could come along with Harry, or they could be back at Hogwarts while Harry is in Japan, but still communicate with him. There might also be some Japanese magical teachers or judges in the tournament.
The main character would be Harry. There could be a Japanese wizard who is like a prodigy in dueling and becomes Harry's main rival. There may also be some side characters like a Japanese witch who helps Harry understand the local magical customs. And don't forget about the tournament organizers, who could be important characters in the story, setting the rules and creating the challenges for the dueling tournament.
The best chapter pointer here is Chapter 125, "The Great Seed Selection Contest!". It opens with Next, it was Qi Tianyu's turn. and closes on He deliberately chose the most inconspicuous wheat seeds..
The best chapter pointer here is Chapter 116, "Group Freeloading!". It opens with But before the audience in the live room had time to continue brewing the... and closes on Their old Jiang family never had such twisted genes in hundreds of years!.
If you want the clearest chapter reference, go to Chapter 129. Early on, When they saw that the live chat was full of praise for Jiang Li, those...; later, the chapter leans on Had they been used as pawns by publicity accounts?!.
The best chapter pointer here is Chapter 136, "Jiang Li Can Actually Draw Talismans?!". It opens with A few people retraced their steps back to the place they had just been. and closes on Aunt Ying and the camera PD arrived soon after..
A practical answer is Chapter 126, because it turns the idea into a concrete scene. The chapter opens with Wen Jiaojiao initially wanted to cause trouble., adds pressure through Turns out their Sister Li is not only a walking encyclopedia cum mysticism..., and ends on The trolls lurking in the.
Look to Chapter 135 for the clearest answer. It begins with The sun blazed down mercilessly, but thankfully, the path to the mountain..., keeps building through Zhao Lang was also very humorous, and even the usually stoic Jiang Li..., and lands on Are you healed from your injuries?" Zhao Lang.
The best chapter pointer here is Chapter 167, "Roommates Became Fans of Jiang Li after a Variety Show?!". It opens with By the experimental field, Qi Tianyu was quite helpless as he watched Wen... and closes on Even when getting into the car, Qi Tianyu was still savoring the moment in....
Look to Chapter 144 for the clearest answer. It begins with Ordinary people would have been at a loss in this situation by now., keeps building through But Jiang Yan was, after all, Jiang Yan., and lands on He then noticed the hand—fair and slender, not at all like an auntie's..
The best chapter pointer here is Chapter 138, "From now on, let's get to know each other again". It opens with Is there such a good deal? and closes on Could it be that the poison also had a side effect of making a person more....
A practical answer is Chapter 127, because it turns the idea into a concrete scene. The chapter opens with Witnessing Jiang Li leave with a bucket, Jiang Yan refused to admit..., adds pressure through [LOL, I'm dying laughing, the Young Master is cursing heaven and earth..., and ends on He Yun.