Lost Echoes

While photographing on a street corner, Riku meets a self-proclaimed minor goddess named Umi. He doesn't know if their meeting is fate or orchestrated, but she asks him to travel to the past and alter a specific event. His help is essential because he carries the soul of someone involved. If he refuses, everything he considers normal will change, and his childhood friend Yuika will suffer calamity. Because in her past life as Ginchiyo, she killed her dear friend, and her grief has endured for 430 years, slowly consuming her soul. The only way to save her is to prevent the incident that caused her regret—and this is the last chance. From Hau~ Omochikaeri!