A unique original character (OC). If the OC has a distinct personality, backstory, and goals that interact well with Thor's world, it's interesting. For example, an OC who is from a different realm and has a special power that Thor has to learn about.
Good character development is key. Not just for the OC but also for Thor. If the fanfiction shows how Thor's character changes or is influenced by the OC, it can be really engaging. Also, an exciting plot. Maybe the OC is involved in a prophecy that Thor has to deal with, creating a lot of action and drama.
Chapter 494, "Don't Die So Early", is the clearest early answer because it turns Skylar's situation into a concrete plot event. It opens with Its eyes which were massive, lidless, and glowing faintly with... and closes on Then he straightened and turned to Damien, expression serious, almost....
Chapter 498, "A Demon With Intelligence", is the clearest early answer because it turns Damien's situation into a concrete plot event. The chapter turns that into something concrete by moving from Damien and Garrick didn't see these ones at first. to The demon watched Garrick go, then turned its attention fully back to....
Chapter 46, "After modification: Chapter 46 Wrong, there's an issue [Please follow!]", is the clearest early answer because it turns Xia Ding's situation into a concrete plot event. It opens with Hearing Shi Qing's polite request to leave. and closes on After the alarming incident of the deceitful monster attacking Xia....
Chapter 150, "Green Bamboo Fence and Marking Stone, Expanding Territory", is the clearest early answer because it turns Yuwen Hu's situation into a concrete plot event. It opens with In the past five days, the leader has used nearly six hundred pounds... and closes on But it was indeed unexpected for him that the Mirror Immortal Camp....
Chapter 158, "Preparation, Arrival", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Ever since the day before yesterday, they have been staying in the... and follows through with He wasn't intentionally withholding from others, but he himself was....
Chapter 36, "Solidified Fire Oil [Seeking Follow-up Reads!]", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The chapter gives readers a real answer by opening on No one thought Xia Hong would get injured, because the one who... and ending on Somewhat puzzled, it lowered its head to look at its palm, only then....
Chapter 56, "Intermediate?", is the clearest early answer because it turns Solidified Fire Oil's situation into a concrete plot event. It opens with The hardness of the Golden Frost Tree, Xia Hong had experienced it... and closes on To think that the Wood Puppet Monster could control five or six.... The key payoff is that the chapter closes with It had already come up with a countermeasure!, which gives Solidified Fire Oil a stronger narrative position and pushes the relationship tension onward.
Chapter 79, "Luo Ming's Mouth Shines Brightly", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The distance between Great Xia and Rogel Camp is actually just four... and follows through with This is bad!" As Xia Hong raised his saber to fend off the one....
Chapter 65, "Accidentally Right", is the clearest early answer because it turns Luo Ming's situation into a concrete plot event. The chapter turns that into something concrete by moving from Killing the Wood Puppet Monster definitely has immense benefits. to Then he stood up, looking at the now completely disappeared massive....
Chapter 51, "Conflict Resurfaces [Please Follow!]", is the clearest early answer because it turns Luo Ming's situation into a concrete plot event. The chapter turns that into something concrete by moving from The camps surrounding Redwood Ridge, although all located on the east... to Western inner perimeter of Redwood Ridge Unaware of Da Shi Camp's....