OP again. Much like NHK taught us, there are always legal options that nobody's made illegal yet.
For instance: http://www.erowid.org/plants/amanitas/amanitas.shtml
But I'm not going to recommend that you take the same path I did, I'm the guy who posted about LSD earlier.
You'd be doing yourself a better favor if you went to some anime clubs/conventions or something and just threw your pride/anxiety to the wind and tried your hardest to get a girlfriend. Sex/companionship is a natural, safe, and lasting high after all. And its the only drug you can take regularly and not feel like you're missing out on real life.
I admit lots of fun times on the "safer" non-addictive non-narcotic drugs like LSD. My brain can still write computer code pretty well and I don't feel any less mentally capable than before I started supplementing drugs&anime for friends/girlfriends.
But as you get older you can't help but start thinking back, wishing you would have went places and done shit with cool people. Regrets suck more than anything else. They never shut up in your head, they can keep coming back day and day.
So at least give an anime club or something a chance before you end up like me. Not that this life is all that bad, I have money and drugs and exquisite electronics to enjoy anime with, but it sucks not being able or even know how to share those feelings with others.