なんちゃって英語・英会話コミュのChushin-gura

In the New Year holidays I watched the TV drama of Chushin-gura.
The air time was about 10 hours, that is, from 9 a.m. to 7 p.m.
Of course Chushin-gura is a popular story for many Japanese people,
but I was surprised about the long air time.

The drama was very interesting for me, because this story is always
interesting, and the members of cast were wonderful.
Chushin-gura is a story of revenge, and usually this story is told
from the point of view of Samurai.

In this TV drama the wife controlled progress of the revenge.
I think this view is interesting, even if it's not true.
Anyway I think the role of the wife was considerable.

Everybody knows the wife's husband, who was a lord of Akou area near
Kobe City, had a dangerous action in Edo castle about 300 years ago.
He was killed by hara-kiri, but in fact he was insulted by a bad
officer.

Her husband, Asano, is a tragic hero, and Kira, the officer, is
a villain even now for many Japanese people. All are historical facts.
But the truth is in the darkness.

Why have many Japanese people liked this old story during 300 years?
I think the key word is a loyalty.