Seijin Otaku Fest

Seijin Otaku Fest is Metro Denver’s newest premier
18+ anime convention, dedicated to delivering a bold
and unforgettable experience for adult anime fans.
Designed around premium content and an inclusive
community spirit, Seijin Otaku Fest stands out by
offering unique entertainment, exceptional guest
appearances, and vibrant opportunities for both
attendees and partners.

Our Mission:
Seijin Otaku Fest is focused on providing premium,
adult-oriented anime content at an affordable price,
ensuring that vendors, artists, and—most importantly
—attendees receive unmatched value and access to
industry-leading experiences. We are committed to
fostering a supportive community while giving
our partners maximum visibility and engagement.