#predetermination au

wanted to toss my hat into the "blue and yellow going through the underground" ring. shout out to my fiance selene for blue's human name!

in this AU blue (beau) falls into the underground about a year after yellow (bucky) does. bucky's been living with toriel and never really considered going back to the surface until beau came along. theyre the last two humans to fall into the underground before frisk, so i call this the "predetermination" AU!

refs for the PREDETERMINATION AU!

beau (blue) falls into the underground while exploring mt.ebbot to "find inspiration." here, he meets bucky (yellow), a fellow human child who's been in the care of toriel since falling down a year before. bucky offers to escort beau to the barrier so he can return home, along the way meeting many new friends: two other newcomers to the underground, a starstruck yet shy ghost, the elusive royal scientist-- all while the threat of the mountain king looms over them.

these two are the last two humans to fall before frisk arrives to the underground in undertale proper! dunno what all ill do with this AU but im having fun :3

(also click for quality tumblr is ass)

i might be thinking abt this concept a bit too hard. bugs when you lift up a rock + toriel for size ref

(inspired by squid-ink-s doing this with their primary au!)