The entire Monica request. At the start of the game, Monica bites Micah at every turn, and generally acts hostile to strangers out of nervousness. Shara asks Micah to help Monica by pretending to be "the Rose Prince", from Monica's favorite fairytale. Obviously, Monica is less than impressed, but after taking her out to the various dating spots, she eventually opens up to Micah and does a complete 180 personality-wise. Afterwards, she acts cheerful, openly talks to people, and even offers to bake Micah a cake. D'aww.
Raven's whole quest sequence, which ends with her revealing She's half-phoenix and looking just so Woobie-ish and sad. So what does Micah do? Reveals he's a half, tells her she's not alone anymore, and considering how popular she is with fans, quite possibly marries her on one of his two files. Closest thing you can get to reaching through your DS and hugging her.
Near the end of her seventh quest:
Raven: (crying) I thought you disappeared...
Micah: (hugs her) You see? I'm right here. I didn't disappear.