One great playlist could include 'He's a Pirate' from 'Pirates of the Caribbean' soundtrack. It has that adventurous and epic feel which goes well with fantasy novels. Also, 'The Rains of Castamere' from 'Game of Thrones' soundtrack. Its moody and somewhat dark tone suits many complex fantasy storylines. And 'Concerning Hobbits' from 'The Lord of the Rings' soundtrack. It's so light - hearted and whimsical, just like the hobbits in the story.
The 'Lord of the Rings' soundtrack playlists can be considered as ones that tell a story. The music takes you on a journey through Middle - earth. It starts with the idyllic Shire, with gentle melodies, and as the story progresses and the characters face more danger, the music becomes more intense and epic, mirroring the events in the story.
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.
One way is to choose songs with lyrics that follow a narrative. For example, start with a song about a beginning, like a new love or a new adventure. Then, select songs that progress the story, such as facing challenges or growing in the relationship. End with a song that gives a sense of conclusion, like a happy ending or a bittersweet farewell. You can also consider the mood of the songs. Start with an upbeat song for an exciting start, then have some slower, more reflective songs in the middle, and end with a song that ties everything together.