Toge Inumaki is important too. His special cursed speech ability makes him stand out. Also, the principal of the school, Masamichi Yaga, is likely to be important as he is in a position of authority and has an influence on Gojo and the other students. There could be other characters like the members of different clans that also play roles in the complex web of the story.
Suda Masaki was called Soda because his foreign name was Suda Masaki, which was a homonym of "Suda". Suda Masaki was a Japanese actor and singer. He had a wide reputation and fan base in the Japanese entertainment industry. His acting skills were diverse, and he had acted in films such as Seto inland sea, Drowning Knife, and The Confused Generation. In addition, Suga Masaki also appeared on the cover of the summer issue of the Chinese magazine XBlush, showing his cold supermodel aura. His new film, Character, was also highly anticipated. In general, Suda Masaki was very popular under the name of soda, and his acting career was very successful.