[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/oogways_ascension.jpg]]
[[caption-width-right:350:''"Master! You can't leave me..."'']]

By the way, the [[TearJerker/KungFuPanda2 sequ]][[Tearjerker/KungFuPanda3 els]] and the [[TearJerker/KungFuPandaLegendsOfAwesomeness series]] already have pages.

* When Po tries to leave only to be stopped by Shifu who realizes he has to train him. Po confesses that he endured all the abuse Shifu and the Five shoved at him because despite it all, Po said the pain couldn't hurt as much as the pain Po felt in being ''him.'' Po going into length over just how much it hurt being himself and the heart-rending realization at just how little Po thinks of himself is one of the more brutal moments of the franchise, especially because many people could connect to that sort of feeling. It gives the film such heart while Shifu struggles to find a way to help the panda.
-->'''Shifu:''' Then why didn't you quit? You knew I was trying to get rid of you, yet you stayed!\\
'''Po''': Yeah, I stayed. I stayed because every time you threw a brick at my head, or said I smelled, it hurt... But it could never hurt worse than every day of my life just being ''me''. I stayed, because I thought if anyone could change me, could make me ''NOT'' me, it was you! The greatest kung-fu teacher in all of China! \\
'''Shifu''': But I ''can'' change you! I ''can'' turn you into the Dragon Warrior! And I ''WILL!''\\
'''Po''': Come on! Tai Lung is on his way here right now! And even if it takes him a hundred years to get here, how are ''you'' going to change THIS into the Dragon Warrior?! HUH?!
** The worst part of all this, is while Po's ripping into Shifu, you can see Shifu ''realizing for the first time'' that Po's a person with feelings and motivations, not just some obstacle put in his way. At the same time, you can ''hear'' the desperation in Po's voice when he asks how Shifu could turn him into the Dragon Warrior, because he's brutally aware of his shortcomings and faults more than anyone else and endured heaps of abuse just to try and change.
*** Shifu's MyGodWhatHaveIDone expression really cements it.
** Another thing is Tigress spying the whole thing and presumaly hearing everything. While she has a more stoic expression than Shifu, there's enough where you could tell she also feels bad about it. [[FridgeBrilliance Then you remember how she was also ostracized and felt ashamed about herself back when she was a child and it's clear that while she didn't show it, she felt similar pains.]]
* When Tai Lung confronts Shifu. The snow leopard's first line, "I have come home, Master," is oddly sincere, even regretful. This of course is followed by Shifu's visibly painful reply: "This is no longer your home... and I am no longer your master."
* Even during their fight itself there were moments which tugged the heartstrings. The raw pain and anguish in Tai Lung as he cried out how he only ''ever'' [[WellDoneSonGuy wanted to make Shifu proud of him]]. And whilst he initially hurls the question as to whether Shifu is proud of him ''now'' in an angry, mocking tone, when he repeats it the tone changes. It stops being a taunt and becomes a ''plea.''
** And then all of that is matched by Shifu's brokenly whispered reply that he was always proud of him. In that moment, that one tiny moment, when Shifu apologized for having failed him, Tai Lung almost, ''almost'' relented and did a HeelFaceTurn. The relationship between these two has to be one of the most deep, complex, and ''heartbreaking'' in the movie.
-->'''Tai Lung''': ''[savagely beating Shifu]'' All I ever did, I did to make ''you'' '''''PROUD!''''' Tell me how ''proud'' you are, Shifu! Tell me! '''''TELL MEEEEE!'''''
-->'''Shifu''': ''[weakly]'' I have ''always'' been proud of you. From the first moment, I've been proud... and it was my pride that blinded me. [[LoveMakesYouStupid I loved you too much to see what you were becoming]]... [[MyGreatestFailure what I was turning you into]]. I'm s... I'm sorry.
** The moment, in flashback, when Shifu could not attack Tai Lung because he in turn flashbacked to him as a cub, was also poignant and emotional.
-->'''Tigress:''' He tried to take the Dragon Scroll by force, and Shifu had to destroy what he had created...''but how could he?''
* Oogway's [[AscendToAHigherPlaneOfExistence ascension]]. Actually a lot more fitting word for that would be his death. It is a true NeverSayDie moment. He was desperate for Shifu to accept Po before his time came. [[https://www.youtube.com/watch?v=K6eRWvT8RZI The music that plays makes it worse.]]
** Shifu's panic at the loss of his mentor right before Tai Lung arrives is his DarkestHour. The worst mistake of his life is coming back to beat him into the ground, he has no idea how to make it right and his mentor is no longer around to guide him.
--->'''Shifu''': ''[desperately pleading]'' Master! You can't leave me.
--->'''Oogway''': You must believe.
--->'''Shifu''': MASTER!
*** [[FridgeLogic The more you think about it, the sadder it gets.]] Shifu is already old himself. ''How long'' has Oogway been his master, his guide, his friend, even his own surrogate father? There's little doubt Shifu is closer to Oogway than anyone else in the world... and then he just ''disappears.'' If we were to take the animated series as canon, Shifu was with the Jade Palace since he was ''twelve''.
*** Even putting aside the immediate problems, think how alone a person feels in that moment in general. Shifu never had to have all the answers, because Oogway was his safety net. Now the buck stops with him, and he feels far from ready to face that. Later, when Po asks how Shifu is going to turn him into the Dragon Warrior, Shifu is forced to admit he doesn't know. He's accepted that he has to do it, but he's still lost.
* Oogway's talk to Po underneath the Peach Tree of Wisdom. It's when the audience sees just how much Po hates himself and how he desperately wants to be respected.
* Similar to Tai Lung, Tigress' backstory. Especially since her past actions made her the jerk she was in the movie. Of special note is the very end of her story of Tai Lung, where we get to see her as a cub...just as excited and eager about kung fu as Tai Lung, which only results in Shifu refusing to look at her, absently and emotionlessly correcting her form but saying nothing. The look on little Tigress's face says it all.
-->'''Tigress''': Shifu loved Tai Lung like he had never loved anyone before... or since.
** Tigress' backstory [[spoiler:is made worse by the reveal in ''Secrets of the Furious Five'' that she was raised in an orphanage where she was the only predator and Shifu was the first person who wasn't afraid of her.]]
-->'''Shifu:''' I am -
-->'''Young Tigress:''' Afraid?
-->'''Shifu:''' ''(closes the door)'' No.
-->'''Young Tigress:''' Well, you should be! I am Tigress! Tigress the monster! ...A monster no one wants.
-->'''Shifu:''' You are not a monster. You're just a little girl.
* The expression on Shifu's face when Tai Lung breaks Oogway's staff.
* Any of the bullying the Furious Five do at Po, particularly how cruelly they talk about him behind his back, [[StepfordSmiler and how Po just puts on a brave face]] [[{{Determinator}} and endures it.]] Especially how Po snaps at Shifu towards the end when [[spoiler:he tries to make Po fight Tai Lung when he first strikes and Po fires off a small tirade about how no one believed in him, the FF and him especially]].
** Not only that but Po looked up to the Five. And he fantasized about being friends with them. You can see how heartbroken he is when they all make it clear that they despise them. They get better but it's still painful.
* Tai Lung turning against his Master, and spending 20 years in prison, for what turns out to be..."Nothing?!" No wonder he went berserk instead of accepting the same epiphany that Po did.
** More specifically, Tai Lung declares "It's nothing!" ''[[{{Symbolism}} right while he's looking at his own reflection]]'' in the Dragon Scroll. Add in the fact how he clearly felt the only way anything he did mattered was if it made Shifu proud of him, and him being an orphan left on the doorstep, and it's very clear Tai Lung has a ''huge'' InferioritySuperiorityComplex and that much of his rage and lashing out, from the rampage to his final attack on Po, is motivated by this. While it doesn't excuse the awful things he did, it is incredibly sad that the snow leopard had no sense of his own worth, that he believed everyone (from his birth family to Shifu and Oogway) had turned on him or abandoned him, that he felt everything he had learned and done had been for nothing, and that [[DramaticIrony he ended up almost killing the one he had loved so much]]. (Just [[http://static.tvtropes.org/pmwiki/pub/images/it_cannot_be.jpg look at his face]] when Oogway denies him the scroll and Shifu just turns and walks away without defending him.)
* Po's father telling him the secret ingredient in his noodle soup. [[spoiler: There IS no secret ingredient. Something is only special if you believe it is. This leads Po to realize the true meaning behind the Dragon Scroll, something not even Shifu could do.]]