アイムホーム (I'm Home) is a Japanese television drama series based on the manga by Kei Ishizaka.
[5] Hisashi Ieji (Takuya Kimura), a successful securities' company employee gets injured in an explosion.
He doesn't recognize his current family, seeing their faces as emotionless masks but remembers well his ex-wife and their daughter.
On top of that his former aggressive and selfish personality disappears giving way to a considerate and caring man.
The company higher-ups transfer Hisashi to a marginal, "drop-outs" department but instead of neglecting him closely watch his every move.