https://www.katsucon.org/
Katsucon, a three-day fan convention hosted at National Harbor is popular with anime fans.
Last year, the Marvel fan meetup drew in a crowd of over one hundred fans and cosplayers, and was even featured on Marvel’s official website. If you want to get your party on, the resort has a rooftop bar and DJ every night. There’s a rave on Saturday night, full of anime tunes and glow sticks.