In "Tokyo Revengers," characters grapple with feelings of powerlessness and inadequacy through various struggles and conflicts. Some characters like Takemichi Hanagaki feel powerless due to their inability to protect their loved ones or change the course of tragic events. Others, like Mikey and Draken, may struggle with feelings of inadequacy as leaders, questioning their ability to guide their gang or make the right decisions. These themes of powerlessness and inadequacy often drive character development and shape the narrative of the series.