SPY X FAMILY - Anya Forger - Party Ver. (SEGA)

The story is set in the two imaginary European nations of Westalis and Ostania, which, although culturally similar, maintain tense relations within an alternative Cold War framework following a bloody conflict. To keep the fragile peace between the two countries alive, the Westalian agent known as "Twilight" infiltrates the militarized Ostania under the alias Loid Forger, aiming to uncover and thwart the machinations of Donovan Desmond, the leader of the militarist party, and prevent the outbreak of hostilities. To do this, Loid must create a fake family and enroll his "daughter" at the prestigious Eden Academy, attended by Desmond's son. Posing as a young widowed psychiatrist, Loid decides to adopt an orphan named Anya and marry Yor, who appears to be a simple government employee, building a family that appears credible to everyone. However, the family is quite unconventional: Twilight is a spy with extraordinary mnemonic, calculation, and disguise skills; Anya, unbeknownst to everyone and even to Loid himself, has the ability to read minds due to experiments conducted on her; the wife Yor is a highly skilled assassin known as Thorn Princess, and keeps her true profession hidden from everyone, even her brother.

The "husband" and "wife" remain respectively unaware of each other's true identities, while Anya – thanks to her special ability – manages to have an overall view of the entire situation and tries to help her "father" succeed in his mission, fearing a return to the orphanage.