The chapter-opening fiction in Magnum Opus are the diary entries of Zo Malak, an Ulgan who somehow managed to form a stable relationship with a human... only to lose him when a Centimani arch-nemesis of hers killed him and left his body for her to find. At the start of the second chapter, she recounts a letter from the Osiran Dr. Brine, suggesting that her lover was any number of supernatural creatures. The heartwarming part is at the end:
"But at the end, he suggests that perhaps he was just a man, a man strong-willed enough to love without prejudice.
"And in this I find hope for the doctor yet."
Although the story of Hendaid Bain in Magnum Opus is mostly sad (an Osiran creates a Promethean crow, who has all the usual Promethean issues on top of being a goddamn sentient crow), the last line to refer to the creator is an understated happy ending:
"Afterwards, he went deep into the cave, and after a while he went down the mountain to a village of people, and they let him stay there."
In The Firestorm Chronicle Fiction Anthology reveals that Hendaid Bran finally got his happy ending too-a pair of Prometheans decided to help him with his lack-of-hands problem when creating progeny (human progeny, which means his child will be much less miserable than him by default), and he underwent the New Dawn to become a perfectly normal crow.
In the 2nd edition Tammuz section, the highlight fiction features a mine boss coming to the defense of Clay, a Tammuz who has joined the team of miners, speaking of all the good things that Clay has done for his team. Yes, it does involve the boss punching a man who harrassed Clay and describing him as "a freak, but our freak", but it highlights just how much Disquiet has weakened between editions that something like this is even possible.