I'm Incredibly Delicate with Two Secret Identities

[Third-person narration]

In 20XX, the large-scale full-dive game New City launched.

To experience the fun of a high-level character carrying a newbie, you created two accounts on the same server: [Byakuya Mari] and [Hasunuma Koshui].

But one day, when you logged into [Hasunuma Koshui], you discovered that you couldn't log out. And your first account, [Byakuya Mari], had once been identified by the Special Division for Unusual Powers as a top-tier dangerous ability user, and was also a "dead person" who had long ago been executed by government officials.

In 20XX, the Special Division for Unusual Powers approached [Hasunuma Koshui], whose ability was [Quell the Flames]. They hoped you could use your power to send the city, which had been frozen three years earlier by your older sister [Byakuya Mari]'s ability [Wrath of Winter], into a cycle of reincarnation.

You: "...O-okay... *sob*."

But you failed.

To save your life from the disappointed Special Division, you volunteered to follow Sakaguchi Ango and go undercover in the Port Mafia.

Mafia A: Your big sister is so badass!

Mafia B: Your big sister is so badass.

A while later...

Mafia A: You're so badass!!

You: Oh, it's nothing, really. (hands on hips.JPG)

*Main story: Alternate timeline

Theme: The justice you want to uphold is your own!