- The death of Hydreigon. Even though he comes back at the very end.
- It can also be sad to see your partner's reaction when Kyurem nearly kills you in a No-Holds-Barred Beatdown, with your partner unable to do anything about it.
- The Reveal of what the golden orbs the townspeople see are. They're humans that came to the Pokemon world and failed in their mission to save it.
- Unlike previous installments, you don't come back post-credits...until you play as the partner to work to bring you back. The first post credits side quest involves bringing your character back for a joyful reunion... unless of course, you choose not to return. One can only wonder how your partner would feel after that...Narration: Do you want to return to the Pokemon world?Select "No".Player: (Is this...the right decision? If I let this chance go now...I don't think I'll ever be able to return to their world again. I would never...see them...again...Wouldn't I...regret that decision?)Narration: You have no regrets. You will not return. Is this truly how you feel?Select "Yes".Narration: You're certain?Select "Yes".Narration: And so the decision was made...and [Player] made no attempt to go back to the Pokemon world. No regrets. That is how [Player] left the Pokemon world...never to return.
- Munna's Motive Rant concerning their Start of Darkness. All she wanted was to be accepted and to have friends, and all she got was heartbreak and betrayal. Is it any wonder she bought into the Bittercold's promises of a "new, better world"?
- Finding out that your partner is an orphan, and has been alone for as long as they can remember, at least until you showed up.
- The part before the credits roll when the player breaks down crying. In the English version, the player starts sobbing after hearing the message in the Frism. The dialogue is as follows after the message:Player: (Sob... [Partner's name]... Even when you said... you wanted me to stay... Even though I promised you...)Flashback appears. After it ends, it cuts back to the player.Player: (But... You already knew, didn't you? That I... wouldn't be keeping that promise... That I would have to leave you someday. And... in the end... When our eyes seemed to meet across the sky...)Flashback appears.Player: (Those eyes... The way those eyes fixed on me...)End of flashback.Player: (I'm sure of it... [Partner's name]... everyone... You didn't forget about me. You remembered me, didn't you? You looked up at that light, knowing it was me... to say goodbye... You even managed to overcome your fate to forget me... [Partner's name] still... Everyone still... They still remember me... [Partner's name]... My... friends... Sob...)
- In the post-game, whenever the partner wakes up and sees the empty patch of hay where the player character would have been sleeping at, every single morning.
- Especially as it's pretty strongly implied that your partner is suffering from depression. The fact that he resolutely becomes a Stepford Smiler does not help at all.
- What's worse is the animation: the partner wakes up and immediately turns to the empty bed, just like they used to when the player was still around. It's like they're hoping that it's just a dream and one day they'll wake up and find that the player never left.
- Despite missing the player greatly, the partner was actually willing to sacrifice a chance to see the player again because they knows that the player had friends and family back in the human world who must have been worried sick about where the heck the player was and they didn't want them to suffer from the player's disappearance and who knows if the player is actually willing to be separated from their friends and family in the human world forever. They fear that if the player comes back that there might be a chance the player might never be able to return to the human world. They were willing to continue on their own suffering just so the player won't be separated from their love ones. Fortunately this issue was resolved by having the player granted the ability to travel between the two worlds thus the player didn't have to hurt anyone.
Tear Jerker / Pokémon Mystery Dungeon: Gates to Infinity