Tomoyo Shiino has been a steadfast support for her friend Mariko, offering comfort through years of abuse, neglect, and despair. Despite the tumultuous ups and downs of Mariko's life, their bond remained a source of strength for both of them. However, Tomoyo is devastated when she receives unexpected news of Mariko's passing. She had felt helpless while watching her friend succumb to the demons that haunted her, but now Tomoyo is determined to fulfill one last wish for Mariko: to set her free by scattering her ashes on a final journey together. This emotional journey is captured in the poignant one-shot "YISKA" and accompanied by the heartwarming extra, "Home Sweet Home!"