Design System

Design System is a great type system consisted of 5X7X2=70 font styles from 70s-style simple square sans to the widest style of all time that is best for titles, logo, and text. 
Their simple form does not limit the target of design and can be used for any creative work. 
Additionally, they all have been designed not to provide a feeling of strangeness when they are used in mixture with each other.