Namida wo Fuite

Onishi Katsuo is a 35-year-old carpenter and former college football player who sees life almost in the same balance as a football game (guts and glory along with team spirit). One day he learns that his friend (a college football teammate) was killed when his house burned down. His friend's wife is in a coma and his four kids are now homeless, Eguchi has the children live with him (in his one room apartment) above his bosses home.
At first, the children are still traumatized by what has happened, but if anything can help them regain hope, it's Katsuo's caring and energetic spirit.
(Source: JDorama)