I guess it wouldn't be too different from RPing in forums, messengers, etc? I mean, I kinda have the rule that if I'm unsure of something, I give my RP partner a heads up that my character is involved in this or that and it's ok to not want to participate in that if they don't want to. OOC communication is key in these situations in making sure you don't upset someone or get involved in something you don't want to.Â
But overall, there is definitely a scene for darker, grittier and even taboo subjects in FFXIV roleplay from what I've seen in the community. Your character backstory appears to be well thought-out, I appreciate that the feelings for her brother have had heavy implications/consequences for her. (And like Alothia mentioned, portraying it as purely a story element and not as something fetishized will definitely help in making the character more appealing to others.)
You will meet people who will dislike it, maybe even insult you for it, but it's fiction at the end of the day. But people dislike people for doing things like playing a lalafell, or a voidsent, so don't let it get you down if it happens. Roleplay what you enjoy. Different strokes for different folks and all that! Good luck.
But overall, there is definitely a scene for darker, grittier and even taboo subjects in FFXIV roleplay from what I've seen in the community. Your character backstory appears to be well thought-out, I appreciate that the feelings for her brother have had heavy implications/consequences for her. (And like Alothia mentioned, portraying it as purely a story element and not as something fetishized will definitely help in making the character more appealing to others.)
You will meet people who will dislike it, maybe even insult you for it, but it's fiction at the end of the day. But people dislike people for doing things like playing a lalafell, or a voidsent, so don't let it get you down if it happens. Roleplay what you enjoy. Different strokes for different folks and all that! Good luck.