I have a friend who is rather shy and is reluctant to join in with my RPG hobby. Their main complaint is that they aren't confident enough to roleplay with others. (Or "act," as they say it.) They are a big fan of board games as well as the fantasy genre, and have mentioned they like the idea of an RPG where they have a character and are part of a story.
Eventually, some level of RPG is to be expected, but I'm looking for a system where it can be avoided without it turning into wargaming. What would a good starting system be for them?