Libra on the inside, Aquarius on the way in.
Your sun in Libra (air, cardinal) is the engine — what thinks at the centre, what starts when you are at home in yourself. Your Aquarius rising (air, fixed, ruled by Saturn) is the door — the way you arrive in a room, the first read the world takes of you, the body you walk in.
Strangers tend to assume you are witty and detached — that is the Aquarius arriving first. Then they get to know you and discover the Libra air underneath, which can be reinforcing — same flavour, more of it.
Reads as Aquarius until you trust them; then Libra comes through. The cardinal-fixed mix means you starts on the inside while holds on the outside — internal and external rhythms are different, which is its own work.