Friendship is also a big theme. Sirius might rekindle old friendships or form new ones with other professors or students. It could be about how his loyalty to his friends is translated into his teaching and relationships at Hogwarts. He might also have to deal with betrayals, similar to what he faced in his own life, but this time in the context of the school environment.
One common theme is redemption. Since Sirius had a troubled past, many fanfictions focus on him trying to make up for his past mistakes as a professor. Another theme is family. He might be a father figure to some students, especially those who lack proper family support at Hogwarts.
The theme of mystery often pops up. Given Sirius' past with the Marauders and his time in Azkaban, there could be fanfictions where he is involved in solving mysteries at Hogwarts. Maybe there are hidden secrets in the castle that only he can uncover because of his unique knowledge and experiences. These mysteries could be related to dark magic, lost artifacts, or even the true identity of certain characters.
Chapter 705, "Is She Her Own Destined Noble Person?!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter gives readers a real answer by opening on He Wen was made to laugh by Bai Lu.
Chapter 745, "I'm Pregnant", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Several people finally met Shu Yan in the hospital ward.
Chapter 838, "Just Call Me Grandpa", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. The chapter turns that into something concrete by moving from Gu Qiang's expression was subtle as well.
Chapter 707, "I am Daoist Qingfeng", is the clearest early answer because it turns Bai Lu's situation into a concrete plot event.
Chapter 816, "Don't Take Them Seriously", is the clearest early answer because it turns Lin Manru's situation into a concrete plot event. Early on, Unexpectedly, they didn't cry or fuss; they stopped right by Meng....
Chapter 695, "Is This a Matter of Money?!", is the clearest early answer because it turns Shang University Scholar's situation into a concrete plot event. The chapter gives readers a real answer by opening on Shang Shuyue just felt she was out of luck.
Chapter 866, "Why don't you die in his place?!", is the clearest early answer because it turns Didn's situation into a concrete plot event. The chapter gives readers a real answer by opening on In Shuiyun Temple, Changqing silently watched everything happening in...
Chapter 902, "Sister, Please Have Your Meal", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with The college entrance exams over these two days took quite a toll on... and closes on After all, these people love gossip; let them talk..
Chapter 613, "When a Whale Falls, All Life Thrives", is the clearest early answer because it turns Xu Village's situation into a concrete plot event.
Chapter 770, "You're Actually Speaking Up for Her?!", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Back in Chixia Village, Jiang Li had already begun showing utter...