Earlier, we learned through the "Famitsu" magazine about the sequel (or perhaps an expansion pack) of "Musou Orochi," titled "Musou Orochi:魔王再临" (Maō Gainin). In "Musou Orochi: Maō Gainin," characters from Chinese mythology, Fuxi and Nüwa from "Shin Sangoku Musou 2" (Dynasty Warriors 2), will be added. Additionally, characters missing from previous "Sengoku Musou" (Samurai Warriors) games will also be included. With this, "Musou Orochi: Maō Gainin" finally achieves the great goal of gathering all the characters from the Musou series.
Currently, the development progress of this game is nearly 90% complete, with a scheduled release date on March 3rd. The new game modes added in "Musou Orochi: Maō Gainin" are still unknown. If Koei merely adds a few old characters from previous games and sells it as a completely new game, that might seem somewhat unfair to the fans.
(Note: Some names may vary based on official translations or regional differences.)