Kimi to Boku no Ashiato: Time Travel Kasuga Kenkyuusho  

Your and My Footprints: The Time Travel Kasuga Laboratory, 君と僕のアシアト～タイムトラベル春日研究所～, 너와 나의 발자취

In 2022, Kazamidori Aki works at a Time Travel Research Facility alongside Miyama. The facility employs cutting-edge technology called Aston, which scans every detail of the city and reconstructs it precisely into clients' minds through a process known as In-Brain time travel. This enables users to revisit their past without any changes in the present, preventing paradoxes. Aki uses her services to assist individuals who have made mistakes in the past and help them make amends. However, she has an unusual past that sets her apart from others, which she must confront while dealing with her personal history.