You should use more particles. Right now there is "no" grammar used.
I think they will be happy to know you learned Japanese for our culture (mangabunka)! Manga and light novels and games are pretty normal so I think those are okay but eroge is more on the darker side I think... (^^;
Otaku don't really have too good image because many are neets...
I talk to my friends a lot about shoujo manga but eroge I don't really have anyone to talk about that... Only small otaku friend circle... (^^;
Shoujo manga is very much more normal
I can try to take a pic later this week when I go to buy new games... If I remember... (^^;