>>314684681. Go to a convention and hit on every (yes every because 90% aren't single) cosplayer girl you see. Helps if you actually know the character and series since you can chat a bit about that over lunch.
2. If in university unironically join an anime club. If not in university go do a masters and join an anime club. Also go to gaming nights for your university but wear some kind of weeb giveaway outfit.
3. Join the Nijisanji EN Fanserver discord. I've seen so many Japanese girls in the voice chat there it's unbelievable. Disclaimer: You'll need to become a vtuber and stream to the voice channel like that one guy or they won't give you any attention.
4. Become a vtuber, get popular, and date a fan.
5. Groom a 2 view indie.
6. Go to instagram and search for cosplayers in your area. Figure out what they look like and where they live then coincidentally run into them out in public and ask them out for lunch.
7. Go onto tinder or some other 'dating' app and show off your figure collection in your profile pics. Low chance but hey you might get lucky.
8. go to the myfigurecollection forums and ask if there are any singles in your area
9. Hikaru Genji yourself a weeb gf
10. Move to Japan and ask out any Japanese girl. Works VERY well if you go to a Gundam Base. Downside: You need to work in Japan and fuck their work culture.