Under Sunlight is a Trollhunters fanfic by quietpagan.
Jim Lake isn't sure what to do when he rescues a troll from being turned to stone in his own backyard, and is introduced to an entire world underneath his feet. He certainly didn't expect to find a family.
The fanfic can be found on Fanfiction.net.
This fanfic provides examples of:
- Alternate Universe Fic: What if Jim was introduced to the troll-world when he was a small boy with Kanjigar alive and well?
- A Boy and His X: A boy and his troll friend.
- Intrigued by Humanity: Blinky has a particular interest in human literature. In-fact, his interests nearly gets him killed, staying in the local public library for too long and nearly getting caught in direct sunlight.
- Protected by a Child: The literal premise of the fiction starts with Jim saving Blinky from being turned to stone in the sun with a bed-sheet.