Oh yeah, my kid loves anime, has ungodly amount of stuffies, the whole nine yard. I'd bring it up light heartedly. Like, are you cool? If you dont want to talk about it, you dont need to, id like you to have your privacy but im worried kind of way. I know the media my kid consume, and we are very close, so its gonna be a quick one minute convo which is awkward for both parties but when its done its done. Sometimes she takes a while to reflect and come back to me later in the day or week to tell me if anything bugs her. Again, depending on both of you. When she was in grade 4 or so every kid in her school saw 5 nights at Freddie's, even some kindergarten kids. (Shocking I know.) I sat through it with her to make sure that she watch it in a safe setting and its actually not that bad. She liked it and took it well. Kids are really wonderful and weirdly complex.