Character Arc
Mari Tamaki, nicknamed Kimari, begins the series as a warm but timid second-year student who is terrified that her high school years are passing her by. She dreams of grand adventures but freezes whenever the moment to act arrives, repeatedly skipping the train she swore she would take. Her longing for something meaningful makes her the emotional entry point into the story.
Everything shifts when Mari finds an envelope of cash belonging to Shirase and learns of her wild plan to reach Antarctica. Rather than back away, Mari is electrified by the idea and throws herself into helping, becoming the glue that binds the group together. Her optimism and willingness to leap, even clumsily, give the team momentum when others hesitate.
Over the course of the journey, Mari learns that taking action is messy and frightening but ultimately worthwhile. She faces homesickness, self-doubt, and the realization that chasing a dream means leaving comfort behind. By the end she has transformed from a girl who watches life happen into someone who seizes it, proving to herself that she can do something extraordinary.