My, and Ulrich's first take at Yu-Gi-Oh! SEVENS! After a experiment on time travel after his duel with Nail, Yuga had transported Romin into the era of Synchro Summoning where she has to deal with a war of the Dark Signers, and Illaster when the Meklords appear from the future where she has to use all she learned from Rush Dueling to succeed with her new allies! RominxLeo, RoaxLuna

Villains are naturally competitive.

Triologia "Naturaleza letal" parte 2 Rin: el creía que por "naturaleza" tenia el derecho a quitarme todo hasta a la mujer que amo ... vaya imbécil ... Ruri: yo le entregue mi respeto y mi cariño al grado de volverlo mi familia pero lo mal interpreto y me convirtió en el "cisne negro" para siempre ... Ambas: A veces uno se cansa de ser la victima humillada.

The OCG Structures tag doesn't exist on fanfiction, and I don't know how to fix that, so since the game it's based on is called DUEL MONSTERS Saikyo Card Battle, I post it here. (also available on AO3, where the tag does exist) The Four Kings appear at Goha 7th Elementary.

Iruma magically ends up in Goha city.

Yusaku passes the torch to Yuga