YOU LEAVE ME SPEECHLESS LAKSJDFLKAJSDF
Thank you very, very much for this comment holy tamoli gracious goodness. The Siren AU in general, Arctic!Researcher MC, and Orca!Sans are all 100% Llamagoddess, and I just filled in the world with the lore for beasts/hybrid, dadster, and so on.
LOL Yeah, the deaths were a lot of fun to plan/write. Crazy goes well with crazy, and Dadster panicking over it will never not make me laugh.
Thank you! The Courtship misunderstanding was one of my favorite things to write. I was eager to read reactions when players realized what MC had done. 
I appreciate you letting me know about the typos / errors! I hopefully have them fixed up. They work okay on my computer, but I can't test mobile/other devices until I upload them to itch so fingers crossed. (:
I answer some of your spoiler questions in my discord - I'll move them a bit further down since it'll be some time before I upload the bonus scenes (which will be more of Sans' perspective, and shed more light on WD).
SPOILER
Sans' LV has contorted his magic, like it did with WD. Sans' songs can remain in someone's head for up to an hour after he sings to them. That's how the two security guards were caught - Sans sung to one of them to draw out a second one, and then used commanded both of them to take out the security (as he learned from MC talking about crime shows how important that is to destroy).
Had WD known about any of the abuse or mistreatment, he would absolutely raised hell. He has a zero tolerance for MC abuse. In the bad endings, he'll always hunt Sans down to "rescue" MC. How that rescue attempt ends depends on your MC & how fond they are of Sans.