Maybe a demon that has somehow managed to cross over into Kagome's time without being fully noticed at first. This demon could be after Shippo for some reason, perhaps because of his connection to Inuyasha or his own unique fox abilities. As Shippo and Kagome start to figure out what's going on, the demon becomes the main source of conflict in the story.
There could be a group of people who are against the idea of the feudal era and the magic associated with it interfering with modern times. They view Shippo as an unwanted intruder and Kagome as a traitor for bringing him into their world. This group would use all kinds of means, from political to technological, to try and get rid of Shippo and stop Kagome from continuing her adventures in her own time.
Chapter 858, "If You Dare, Take It", is the clearest early answer because it turns Shuiyun Temple's situation into a concrete plot event.
Chapter 744, "Dig Three Feet into the Ground to Find Her!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with What?!" Wen Jiaojiao directly questioned out loud, "On what basis are... and closes on Where have you taken my wife?.
Chapter 832, "So Impressive, My Sister!", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. The chapter turns that into something concrete by moving from These clothes were indeed very beautiful, extremely exquisite.
Look to Chapter 31 for the clearest answer. It begins with Before Shen Lan had reached the backyard, she already heard the sounds of..., keeps building through Facing the freshly risen morning sun, she noticed at a glance the girl..., and lands on After staying in the study and reading for another.
Chapter 863, "Your Marriage is a Calamity", is the clearest early answer because a shaky connection becomes usable in the plot. Early on, The raffle results came out quickly.. By the end, My fiancé is thrilled too; we were planning to get married next year,....
Chapter 861, "Add the Link!", is the clearest early answer because it turns Link's situation into a concrete plot event. The chapter gives readers a real answer by opening on At exactly ten in the morning, Jiang Li started her live stream.
Chapter 823, "The Jiang Lake Swindler Who Sponges Off Others", is the clearest early answer because it turns Feng Shui's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The Yu Family estate is elegant, and even the names of the dishes...
Look to Chapter 3 for the clearest answer. It begins with Qiao was still annoyed at the attitude of this unknown girl when she heard..., keeps building through She's actually Miss Jiang Li from the Jiang Family?!, and lands on Jiang Yan, forced into a marriage with someone he did not love, had....
Chapter 8 is the strongest chapter-level answer because it starts from The resentment that had barely calmed among the crowd surged back two... and follows through on Other people with a handsome and charming appearance often try to conceal....
A practical answer is Chapter 49, because it turns the idea into a concrete scene. The chapter opens with My phone!!!" Jiang Yan's roar echoed continuously through the mountains in..., adds pressure through The guest with the highest score will receive a series of resources from..., and ends on.