A special agent of a certain meimang

In the millennium, Mark stood alone in front of the french window of the apartment located on the top floor of the Star Building in Manhattan, holding a glass of bourbon to celebrate his thirtieth birthday! There is a younger brother who leads him astray, a younger sister who aspires to become a nun from a young age and eventually becomes a celebrity, and a younger sister who has just awakened her second year talent and is clamoring for peace with ordinary humans. Having a car, a house, and a career has been taken to the extreme by Mark, the chief investigator of the FBI's New York office. In theory, Mark should be very satisfied with this lifestyle. Just, there's one problem! Here - it's Marvel Universe!!!!!!