J.S.H. is a small advertising agency formed by four members - Harry, Jessie, Jillina, and Sophia. The initials of their names form the company name J.S.H., which also stands for "just so helpful". Their logo features a flower and apple to represent that imagination is unlimited. The agency treats clients like friends and aims to understand their needs to develop creative advertising ideas. Key roles include the art director who creates ideas, copywriter who develops concepts into ads, account executive who liaises with clients, and administration which handles media planning and production.