Tear Jerker / Haganai

• In the fifth episode of the second season, Rika gives Kodaka a chance to try her new invention that allows people to dream whatever they want. Kodaka uses it to go back 10 years and tell Sora that he was moving, which he never got the chance to do. During this, however, his own voice interjects which lays out his guilt over forgetting his Only Friend and not recognizing her when he got back. Granted, what follows after that is truly unholy Mood Whiplash, but until then...
  Kid!Kodaka: Yozora, wait!
  Sora: (Shocked) How do you know what my real name is?
  Kid!Kodaka: Listen! My family and I are moving day after tomorrow. I won't be back for around ten years. So that means tomorrow will be my last chance to see you!
  Sora: Really?
  Kid!Kodaka: I'm sorry!
  Present!Kodaka: For leaving you alone.
  Kid!Kodaka: But we'll stay friends, even if we don't see each other anymore!
  Present!Kodaka: Except you forgot about her until you came back.
  Kid!Kodaka: No matter what, I promise I'll never forget you!
  Present!Kodaka: And then you couldn't even place her face once you did.
  Kid!Kodaka: I'm sorry. I really am.
  Present!Kodaka: And I always will be. Very sorry.
• During the episode where Sena gets her fortune told by Yozora, Yozora is doing her usual Troll antics, and Sena buys into them, as usual. Only next time, when Sena shows up to yell at Yozora about the trick she played, things are different and Yozora realizes she went too far.
  Kodaka: Hey, don't let your dad get you so upset. His favorite past time is yelling at you for all the stupid stuff you do. It's kind of his thing—
  Sena: That's not the issue! Yesterday I felt so... happy. I had hope again.
  Kodaka and Yozora: (Both rendered silent.)
  Sena: (Starts to cry and wipes her eyes) I dunno, you're so really - you're just - you're so mean. And dumb. You're mean and dumb. I feel like crap so I hope you're happy.