Liono n ess,
The chart you display is not the chart of an introvert. Aries rising with Uranus in the 7th is someone who comes on strong enough to irritate people and have a love-em or hate-em affect on many people. Even with Uranus in 7th, but Pisces rising there is a big difference. Futhermore, with Pluto exactly opposite that Aries Asc, there is NO way that you could describe yourself as a loner, because that figure illustrates someone who has a need to dominate others, or at least hold a position of power - business, politics, etc.
My money is that you are Pisces rising with a 6th house emphasis. This would be a verified, rectified chart that matches up to who you really are. 90% of birth horoscopes cast according to conventional methods and not adjusted are off by more than 2* on the Asc.
The basic idea here is that the first breath theory is a great theory, but it does not give accurate charts at least half the time. If you are an introverted Leo, you almost certainly have an earth or water sign for your Asc.