When Viktor Nikiforov, new leader of the Russian mafia, visits Japan to negotiate a new business deal with the Japanese Yakuza, he didn't expect to fall in love. Viktor instantly loses his heart to the cheerful and somewhat shy Yūri at first sight. He believes that Yūri is a normal Japanese student, but couldn't have been more wrong with this rash conclusion... [Mafia!AU]

Chara reigns as kingpin of the biggest mafia branch in the underground. Twin sister Frisk stumbles into the corrupted world, torn between the dangerous life of a mobster and working undercover for the FBI. Under the watchful eyes of vigilante Sans, rookie Papyrus, special agent Undyne, and more, Frisk will either fight for justice… or fight for survival. Undertale Mafia AU.

Having lived her entire life disguised as a boy because her parents had wished for a son, Yuichiro Hyakuya struggles to accept her true self and gender after their deaths as she is cast into the world without them. Fem!Yuu AU prequel to the manga/anime. May continue into the main story with fem!Yuu/Mika/and Guren love triangle.

Alternate continuity after chapter 123 of Tokyo Ghoul :Re "Fail" (Spoiler alert if you have not read until that chapter!) Kaneki and Touka are overwhelmed by their new opponent. Certain death await them, unless... Is that really what Mutsuki is looking for?

193X, the year where the Mafia and powerful families bloomed. Among them, stood two people that would change the history of Undertale City once everything fall into place. Hand in hand, both of them will carve the path of the tales of Undertale City. Sacrifices have to be made and out of the two, who will be taken and who will be given? (Gaster x reader) (Gaster!Sans x Reader)

Frisk, a homeless, 16-year-old runaway girl stumbles upon an open door on a cold day in Snowdin City, she is thrusted into a world of violence, kind souls(?), and demonic gang leaders. Mildly inspired by "But Its Better If You Do" by Hattersglasschild. (Undertale AU, eventual SansxFrisk)