These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Rewatch Bonus: Reading the story again after reaching significant plot events will allow you to catch some bits of Foreshadowing. Also after those revelations, watching certain character interactions will feel different than the first time through.
Luso: His mom, sister and grandfather died in the first chapter and his dad died before that. There is hope for him though as Luso wrote his grandfather's and sister's name in the book so there is the chance that they are alive.
Adelle: Her father was brutally murdered in front of her. She understandably still has nightmares about it.
Kanin: Has been on the receiving end of Fantastic Racism, due to being a Feol Viera.