Tear Jerker / Planetes

• The episode where we find out why Yuri became a debris collector.
• The conclusion of episode 7: "Extraterrestrial Girl". "This is my ocean."
• Gigalt, about Hakim, shortly before dying. "Why...? Why couldn't I think of one for him? Why couldn't I come up with a nickname...?"
• The Lunar Squirrel Ninjas all died in Tandem Mirror engine explosion, save one who relied on selling what remained behind to earn a living, further compounding Hachimaki's self-centered belief even further...
• The end of the series when Ai, who has been carrying an injured Claire - who she knows is a terrorist - cross-country over the moon and she sees the lights of the dome just as she runs out of air and she screams in terror from that realization.
• After the nightmare fuel that was Episode 24, we are greeted with the reveal that Tanabe survived. As Hachi reveala her letter of will was read by him, she breaks down in tears as she reveals her thoughts about what happened. In the end, Hachi and Tanabe reconcile.
• There was also the glorious subversion. After the Wham Episode "Love," and the equally powerful episode 25, Hachimaki and Ai have returned to Section 7 for one last tour, the latter having recovered from her severe injuries. As they stand on the hull of the Toy Box, they begin a game of shiritori, where they have to reply with a word that starts with the last letter (or, in Japanese, syllable) of the previous word. This is how Hachimaki proposes to Tanabe.
  Ai: Ananke, Jupiter's moon!
  Hachimaki: Kenban haamonika, keyboard harmonica.
  Ai: Kaminoke, hair.
  Hachimaki: Jeez, what's with all the 'ke' words!?
  Ai: You can't think of any more, can you?
  Hachimaki: Ke, uh... I've got one. *uses his jets to propel around Ai, facing away*
  Hachimaki (spinning to face her as they cross into view of the sunrise behind him): Kekkon shiyou, marry me.
  Ai (stunned, then smiles): Hm-hm.
  Hachimaki: Haha, you lost the game.
• The ending of the manga. Despite being an uncaring man as he is, Locksmith knows and feels the weight of what his ambitions have caused.
  Locksmith: "You make it sound so easy, kid."

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