It's been over two years since Frisk fell to the Underground, and was adopted by the Dreemurr family. One of her former foster parents has finally noticed, and come looking for her. Now, if Frisk can't find a way to bring her families together... it might just tear her apart. Book Three of The Underground's Saviour

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. (no pairings)

Midoriya Izuku, determined to become a hero before ever meeting All Might, looks for another way. He might not have a quirk, but that can't be all that being a hero is about. He has the intelligence, the drive, the determination. All he needs now is to know how to use it. Enter Aizawa Shouta.

After Frisk's first year at Hogwarts, things should be looking up for the Dreemurr family, as the awarding of the Order of Merlin suggests. But the next new students at Hogwarts may tip some very delicate scales... and in the Underground Kurt Kairos and Sans have a project of their own. Sequel to Harry Potter and the Underground's Saviour.

Not much would make an Azkaban escape become second page news among the Wizards of the United Kingdom, but the freeing of the Monsters under Mount Ebott would do it. And thus Frisk becomes one of Hogwart's newest, first year, students...