The Lonely Guardian
Dream didn't know what came over him, he wanted some time to think. Some time turned to days and thinking turned to building a nice home. Days turned to weeks and the home is bigger and cozier now.
Weeks turned to years and it's been a while since Dream has seen his friends. Still, they're definitely living a more peaceful life now that he's gone, right?
(Or, Dream left and started a cottagecore after the L'manberg Revolution and a Dreamon took his spot and the plot continues as it does in canon. Except, we have a Dream who likes to stay in his cottage and help his injured friends without telling them who he is, exactly)