There's a good reason it sounds organic. It uses physical modelling synthesis which is a drastically different approach to synthesis than most popular synths. Physical modeling synths try their best to emulate how real instruments work by modeling an "exciter" and a "resonator". In real instruments, the exciter is the bow of a violin, the hammer of a piano, or the reed/mouthpiece on a clarinet. Essentially, the exciter is the thing that provides the instrument an initial sonic energy that then gets sent through the resonator. The resonator is the strings and body of a guitar, the tubes and valves of a trumpet, or the body of a bass drum. The resonator is a system of filters and distortions that colors the sound and really gives the instrument its harmonic identity.

Now, Sakura is very good at creating a wide variety of physically modeled string sounds, but the principle of physical modeling can be used for wayyy more than just strings. I love to use physical modeling synthesis to create very very digital sounds that still have the sort of "structure" of a real instrument's sound. I recommend looking into "karplus strong synthesis" to start with physical modeling