Samurai movie "The last Chu-shin-gura"

I went to the movie with my family.
It was a kind of Samurai movie based on the famous story named "Chu-shin-gura(忠臣蔵)".
Chu-shin-gura was well-known real revenge killing by 47 Samurai in the 17th century.
This movie was the story after 16 years later of the affair.

47 samurai committed suicide with harakiri after Chu-shin-gura, but 2 of them survived for the mission actually.
One lived to inform for bereaved families how they were brave.
The other lived to bring up the leader`s seacret daughter.
Their mission were top seacret, so they didn`t know that they were survived each other.

The story was interested and unique, because most of the Chu-shin-gura movies depict the killing itself. On the other hand, you couldn`t come across the carnage scene very much on this movie. It was not an action movie but a human drama.
I was moved to see the samurai managed to raise the daugher in obscurity and guard her from outside world, because she was the daughrt of the famous rebel.
The scene of her marriage was also compelling. She thanked him for his kindness for 16 years.
She loved him but she understood it was impossible to get together.

But I couldn`t accept the last 15 minutes.
He committed suicide with harakiri after his big mission.
Before her marriage, she made a kimono dress for him with her feeling of gratitude. He died with that dress.
Hum... I couldn`t understand Samurai sprit after all.
It`s crazy.
Without that scene, it was a great movie. But,I don`t feel like watching it again. It put a nasty taste in my mouth.