Sans has gotten himself stuck in the void between worlds in a successful attempt to stop the resets of his timeline. He's not sure how long he's been chillin' alone there, but eventually a chance at escape stumbles his way in from the Veil of Death. His name?-Sirius Black.
A strange but intelligent titan lives deep within the forests of Wall Maria, right under the military's nose. What happens when the mysterious titan comes across two small children and the Scouts? Titan!Eren AU Also published on Fanfiction.net as well as Ao3