Kimi to Boku no Ashiato: Time Travel Kasuga Kenkyuusho

Kazamidori Aki and her assistant Miyama work at a facility that employs a technology named Aston to recreate past events within a client's mind. This system, known as In-Brain time travel, allows users to relive the past in exact detail but without the ability to alter the present, preventing time paradoxes. Aki assists clients in reflecting on past mistakes and reconsidering their current behavior. She possesses a distinctive and unusual history that sets her apart, and she must confront unresolved issues from her own past.