Playing an introvert is definitely difficult because if your character is a "conversation ender" (as in any attempt at conversation just gets shut down or the replies are things like 'I see' and that's it), it is really hard on the other character to keep interacting with you unless their character is flamingly extroverted. Although I don't think my character is exactly introverted, he is quite rude and shameless so I worry often about not being able to RP with others due to their characters disliking him, but that's just how it is! If walk up RP just doesn't work out, you might have to plan a situation where your character would interact more with another one when you contact someone to RP.
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