"The Past" was a novel written by the seventh son of the Tang Dynasty. The specific meaning of "EX" appeared many times in it was as follows:
In novels," EX " usually referred to " ex-girlfriend " or " ex-girlfriend ", which meant that she had once had a partner but did not represent her current girlfriend or boyfriend.
2 In novels,"EX" is often used to describe the relationship between characters. It means that they have experienced a complicated relationship but have now broken up.
3 "EX" is also often used as an shorthand for "Experience", meaning experience and experience.
To sum up," EX " in " The Past " usually referred to an object that one had once owned or an contraction that represented experience and experience.
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.