The fanfiction could also explore how Ichigo's relationships change due to his Darkness Zanpakuto. His friends might be scared or distrustful of him. Rukia, for instance, could be torn between helping Ichigo master this new and dangerous power and being worried about the consequences it might have on him and those around him.
Another aspect could be the origin of this Darkness Zanpakuto. It might be related to some ancient and evil force in the Soul Society that has been dormant for a long time. Ichigo's discovery of this Zanpakuto could be a sign that this evil is starting to stir again, and he has to figure out how to either destroy it or use it for good before it's too late.
The best chapter pointer here is Chapter 49, "Mysticism Girl Jiang Li". It opens with My phone!!!" Jiang Yan's roar echoed continuously through the mountains in... and closes on Thinking this, Jiang Yan marched forward, pulled Jiang Li down from her....
Chapter 44 is the strongest chapter-level answer because it starts from But the next move by the production team proved they hadn't forgotten the... and follows through on Does anyone here know how to drive?.
Chapter 25 is the strongest chapter-level answer because it starts from Therefore, from his childhood, Jiang Shixu had felt an extreme aversion to... and follows through on Having worked beside Shen Lan for over a decade, she had been there when....
If you want the clearest chapter reference, go to Chapter 31. Early on, Before Shen Lan had reached the backyard, she already heard the sounds of...; later, the chapter leans on Facing the freshly risen morning sun, she noticed at a glance the girl....
A practical answer is Chapter 39, because it turns the idea into a concrete scene. The chapter opens with Qi Tianyu had been looking forward to watching Jiang Li's drama unfold., adds pressure through It's not by some great master, I copied it myself., and ends on His original intention was just.
Chapter 52 is the strongest chapter-level answer because it starts from The village chief and the woman behind him exchanged a glance, "This... and follows through on And at this point, they might as well try a desperate remedy for a....
A practical answer is Chapter 50, because it turns the idea into a concrete scene. The chapter opens with [666, if good scores determine rankings, is Flash Change's production team..., adds pressure through I wouldn't wear such ugly shoes!, and ends on What kind of heavenly being had such a sour.
The best chapter pointer here is Chapter 33, "Variety Show of Villains". It opens with Following the announcement, five artists respectively reposted the Weibo—... and closes on Although Su Yinwan was considered half a goddess to him, the whole thing....
Chapter 75 is the strongest chapter-level answer because it starts from The ordinary people in the livestream were all stirred up by this scene. and follows through on But, being a half-baked practitioner is just fine..