"JJK" refers to the popular anime "Jujutsu Kaisen." In the second season, which is titled "Jujutsu Kaisen 0," there will be a total of 24 episodes. This season serves as a prequel to the events of the first season and provides more background information on some of the main characters, including Yuta Okkotsu. Each episode is around 24 minutes long and continues to explore the world of Jujutsu sorcerers and cursed spirits.