"And then I gave you my brain" (DnD OC PMV) 

so ok
the main character in this video is Thalassa, a triton. She is a runaway princess from her underwater kingdom in the Sea of Swords after her father had discovered her having a relationship with a human elf or "Drywalker" as her kind had called them, who's name was Reynala. Not only that, but the elf had survived a shipwreck from a kraken, a kraken that was one of Umberlee's (a cruel sea goddess). Fearing for his people's and his daughter's safety, Thalassa's father had executed Reynala by casting her out to sea and left to drown.
Completely heartbroken, Thalassa had run away with the family heirloom, a viola. However, she didn't know that the viola actually had a spirit trapped inside of it. A spirit that would have Thalassa make a hexblade warlock pact with her...
While living in Waterdeep, one of her close companions was killed by an intellect devourer while they were on a mission. This death after having watched her past lover die was enough to fully embrace the warlock pact, join the Zhentarim, and begin to go down a very, very dark path...
Song used was Bathtub Mermaid by Mili, the acoustic cover done by UmbraticForest.
• 【Mili】 Bathtub Mermaid...