Heartwarming / The Wolverine

• Logan saving an enemy soldier and complete stranger from the atomic blast of Fat Man in Nagasaki. On top of that, said stranger is an officer of the base where Logan's being held as a POW.
  • The officer himself is desperately running around letting prisoners out in an effort to save them from the coming bombers.
• Wolverine putting the bear out of its misery and tracking down the hunter who caused it harm.
• After Mariko's father tried to kill her and she had to kill her grandfather before he killed Logan Mariko tells Yukio before the latter departs with Logan that she is her only family. Yukio in turn calls her 'sister'.
• Logan gently bringing Yukio around after Shingen knocked her out.
  • Also when he saves her from Shingen, saying, "Don't hurt my friends."
• Mild example, but the look Mariko gives Logan as he's helping to clear the tree. It reads as equal parts admiration, gratitude, and blossoming attraction.
• Logan comforting Yukio when she tells him she's seen a vision of his death.
  Logan: Look at me. Lot of people have tried to kill me. Hasn't worked out so well.
• After being his literal Nightmare Fuel for the bulk of the film, Logan has one last hallucination of Jean and lets go of her. The closure of finally being able to forgive himself for stopping her rampage is not only one of the few moments we ever see Logan at peace, but comes across as something the real Jean would have wanted for him.
• Logan referring to Mariko as "princess" — initially it's used when he's highlighting her perceived naivety, but by the end of the movie, it's clearly morphed into an Affectionate Nickname.
• During The Stinger, Logan is surprised to see an old friend who he thought had died many years ago, Charles Xavier.

---