The only daughter of the wealthy Sinclair family, Soma is polite and can easily fit into high society. She's a child at heart though, which can often replace her refined and eloquent manner with high energy, excitement, and enthusiasm. She is also cheerful and kind, and finds it easy to get along with people and make new friends. 

Soma has a love of pastries and desserts, enjoying some daily with a cup of tea. She has a small food blog where she posts photos of the sweets she's eaten from restaurants and bakeries, along with her review of it. When angry or upset she can devour whole boxes of cookies or cake.

Soma also has a love of animals, particularly large cats. She has a black panther that she treats much more like a regular pet, bringing him wherever she can and dressing him up in scarves. She tends to get away with bringing him most places due to her family name, most places would rather accept the jaguar than to lose potential relations with the Sinclairs.