A/N:
This is something that happens during the events in Letters to Derek, it explains a lot of things and I think y'all should read it.
It totally explains stuff.
Isaac and Peter- nuff said.
Title comes from King Krule's Border line and the chapter title comes from King Krule's Neptune State
When Isaac Lahey goes to bed, he sleeps- and tries to not have nightmares and when he doesn't have nightmares, he dreams these sad dreams.
He dreams of sleeping , being content and then he dreams of fingers- fingers going through his hair, playing with the curls.(Isaac thinks he's younger in this part of dream) The fingers stroke his head gently, he starts to see a face with a smile then a voice murmurs Isaac and all Isaac can think is Camden, but he breathes it- and he knows he breathes it, because it feels too loud, the smile falters and the walls of the dream start to collapse- then there's a flood of memories.
Camden teaching him how to ride a bike, Mom with Camden smiling, Camden saying goodbye, Mom dying, Dad yelling, Dad beating him- and the basement- locks, locks, locks, screams, tears, Derek offering him the bite, Dad dead, Derek happy with Stiles, the Alphas killing them all, Isaac holding Derek- calling him his brother- Derek gone, fingers in his hair-
He wakes up mid-scream, in the dead night, then he's sitting up, trying to breathe properly, and feels the sudden yet faint absence of fingers in his hair, as if it isn't imagined. It never feels imagined, it always feels real, too real.
It's three in the morning, too early for anything so Isaac lays his head on the pillow that smells like Derek. He clutches the other pillow, closing his eyes and remembers Derek happy, Derek hugging him, Camden smiling and carding his fingers through Isaac's hair-
Isaac shuts his eyes and tries to think of nothing.
He doesn't want to remember what having a brother feels like.