This episode gives me the uneasy sensation of Shirahoshi joining the crew what with all that about "a certain man someday teaching you to use that power and use it to change the world".
Especially since Shirahoshi's ability seems like a specific subtype of Conqueror's Haki.
Shirahoshi would be like the size of the whole ship
10/4/04 - 8/20/07
So, why couldn't Otohime dodge the bullet with Mantra?
You cannot hope to build a better world without improving the individuals. To that end each of us must work for his own improvement, and at the same time share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful. -Marie Curie
Finally this flashback is finishing. Naturally it makes this arc more meaningful, but I've never been the biggest fan of flashbacks, especially long ones.