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.
Angst fiction, well, it's basically about exploring the darker and more troubled aspects of human emotions through fictional stories. For example, a story might be about a young person struggling with self - identity in a cruel society. They face a lot of angst because they don't fit in and are constantly at odds with themselves and the world around them. It can be a very powerful form of storytelling as it delves deep into the human psyche.
Angst fanfiction is a type of fan-written story that focuses on intense emotions, often including feelings of anxiety, stress, or inner turmoil for the characters.
Angst fanfic is all about highlighting the darker, more emotionally intense aspects of the characters' lives. It can involve heartbreak, trauma, or difficult situations that cause them a lot of emotional pain. The aim is to evoke strong feelings in the readers.