Shunsei Ota

Yanase has worked as a 3D CG designer all across the world. Now back in Japan, Yanase is training a newbie by the name of Kaneda Yuki. There's only one issue: Kaneda is super unfriendly towards Yanase, leaving Yanase frustrated and disappointed. With a new project where they will have to work side by side, how can these two overcome their different personalities?

On the 18th of January, Meguru and Mirai's wedding anniversary, Meguru falls down the emergency stairs at her workplace and dies. Mirai, overwhelmed by sadness, develops a mysterious illness as a result, which is triggered due to fluctuations in his emotions. Before he knew it, he had returned to the past to the time she was still alive. As he relives his life from this point, he discovers a side of Meguru he previously wasn't aware of, as well as relationships he had no idea about. Meanwhile, he starts to search for the real cause of Meguru's death and takes action in order to save her.