Life Back Then (2011)

The plot revolves around a young man named Nagashima Kyohei who has felt emotionally detached due to a traumatic incident in his high school days. However, when he takes a job sorting through the personal belongings of the deceased, he’s forced to face the concept of life and death. He eventually develops a relationship with a co-worker named Yuki Kubota, which allows him to open up a little more, but he soon discovers she has a dark past of her own.
~~Adapted from the novel by singer and writer Sada Masashi.