In one universe, Nico died when he was seventeen. He hung himself in his attic and killed his father. He haunted the house for hundreds of years, then was finally sent to Heaven. It was a rough universe.
This universe, things still happened. Things that made you wonder who was meant to meet who, that some friendships were meant to be, even if they weren't that strong. In this universe, some events mirrored the other.
Nico's father died when Nico was nineteen. A sickness in the chest. The property was left to Nico, who couldn't be happier. A boy who had escaped abuse.
Will moved into the house when they were 20. Nothing was legally known. They didn't get rightfully married but they lived as if they had. Shared bed, meals eaten together, coffee in the mornings and evenings.
Nico died when he was 23 from a sickness that had spread over the town. Three years with Will. Three years of love in his life. On his deathbed, Will was always at his side.
But even after he took his last breath, he didn't leave the house. He couldn't. Will buried him in the forest in the clearing they spent a lot of time in.
Will died when he was 24. Only a year went by before he couldn't be on his own anymore. He killed himself right where Nico had been planning to. A noose in the attic, now heavy with a body.
He also woke up in that house, also couldn't leave.
AN: Sequel up soon: Standing Up With Love. About what happens to Percy and Annabeth in this universe
