Hiyoko, a high school student, aspires to become a painter like her deceased mother. This ambition sparks a confrontation with her disapproving father, who removes her mother's paintings from their home. Hiyoko runs away, finding no other shelter but the Asylum—an abandoned stadium housing homeless individuals and outcasts threatened with demolition by city authorities aiming to "beautify" the area. Within this refuge, she encounters Akira, a rebellious figure with cybernetic enhancements including a prosthetic leg, who leads a group of street children. Hiyoko grew up in the privileged, "well-established part of town," a stark contrast to the Asylum's destitution. The loss of her mother and strained relationship with her father fuel her initial vulnerability and search for belonging. As tensions rise, Hiyoko joins the Asylum residents' resistance. They organize "The Asylum Session," an artistic and cultural festival, to rally public support against demolition without resorting to violence. Hiyoko contributes a large-scale painting on the stadium, symbolizing her personal artistic expression and the community's defiance. Her journey sees her evolve from a runaway to an active participant in the Asylum's struggle. Through her interactions, especially with Akira, she finds purpose using art as a tool for social resistance. The story concludes with her integral role in the festival, cementing her commitment to her artistic identity and the community's survival.