

Kasane and Yuito attempt to chase down Naomi and her kidnappers. Nagi - Yuito's best friend - becomes traumatized after witnessing Naomi's metamorphosis and is taken away for 'Personality Rehabilitation,' an experimental treatment that not only causes him to forget this event altogether, but also enhances his psionic abilities and causes his mental state to rapidly decline. Naomi is then transported away by agents of Seiran, another settlement outside of New Himuka with an OSF branch. To counteract this, Naomi shoves Kasane aside and takes the shot, transforming into an Other in her place.

However, during the mission, Kasane's sister Naomi receives a precognition in which her sister is shot with a bullet that'll metamorphose her into an Other. Eventually, Yuito, Kasane, and their platoon members are called to assist with a situation in the Abandoned Subway. Both of them pass the OSF exam and carry out training exercises and early missions with their separate platoons. The story is played through the perspectives of two playable OSF members: Yuito Sumeragi and Kasane Randall. The Other Suppression Force (OSF) recruits members with supernatural abilities to protect humanity from the Others - mindless mutants which descend from the Extinction Belt to feast on human brains. These substances also grant humans extrasensory superpowers. The game is set in both the near future and an alternate reality where humanity has developed technology and formed a society based on the substances found in human brains. Each companion has their own unique combat abilities, which can then be acquired by the protagonists through an ability named "brain link".

As players progress, they encounter different party members who assist them in combat. The protagonist's powers can be upgraded through accessing the "brain map", which serves as the game's skill tree. While they are equipped with short-range weapons like a sword, both Yuito and Kasane possess the ability of psychokinesis, allowing them to hurl objects and debris at hostile enemies. Players can assume control of either Yuito Sumeragi or Kasane Randall, members of the Other Suppression Force (OSF) who are tasked to defend New Himuka from creatures known as the Others. Scarlet Nexus is an action role-playing game played from a third-person perspective. The game received generally positive reviews from critics, with praise for the combat but criticism for its side missions. It was released on June 25, 2021, for PlayStation 4, PlayStation 5, Windows, Xbox One and Xbox Series X and Series S. Scarlet Nexus is an action role-playing game developed by Bandai Namco Studios and Tose and published by Bandai Namco Entertainment.
