The first question, I think it's because she doesn't know where Shinpei went since Shinpei never revealed his name to anyone when travelling. The second question, is because in his heart, he believes that she's already dead. The third question, he couldn't bear to see his beloved got buried if she did die so he left
Nah she got a rich friend who get anything he wants so he could find him easily...so I don't that they tried
Well let's imagine you in her shoes, your beloved was found gone after your recovery. You tried to find him but your rich friend cannot detect him anywhere, that's why you wrote in your letter "Are you on a journey or perhaps living quietly in the mountains?" because you're unsure where he is since no one he met knows his name and only knows his deeds
I don't believe it the rich guy got a big team of dangerous assassin's, anyway that ending not make sense for me... But at the end of the day it's just my own opinion
yeah, it really does not make sense for me either, but if you think about it if he roam Japan without revealing his name and covering his face and also he has no scars on his face again, I'd also have difficulty to track his whereabouts
I would rather it is a tragic ending...
the plot twist seems to have been a last-minute decision to turn it into a happy ending, without any logic.
there are so many loopholes: why didn't satoko find shinpei san as soon as she recovered? why didn't shinpei san visit even once during the 50 years? why did shinpei just left satoko's dead body in mitsuharu's place without even burying her?