Do you have friends who don’t get your total otaku-ness? Would you rather watch Crunchyroll than go out? Do you preorder your manga and/or games? Do you like anime, manga, gaming (rpg, board, etc.) 
Do you go or want to go to conventions (comic, anime, sci fi, etc.)? If any of the these things sounds interesting or if you want to hang out with people who know what you are talking about and don’t think it’s weird then join. Me I’m an old school Otaku who goes back to Robotech The Macross Saga and if you know what I’m taking about, you are definitely an Otaku. All ages welcome, sorry though you need to be drinking age and above. As we might meet at a bar or microbrewery.