Based on the origin of its name, the symbol representing Marutasu is made up of plus (tasu of Tortoise) signs forming a circle (maru of Marugame).
The circle is made of six green plus signs. The number six comes from the tortoises' hexagonal patterned shells and the color is associated with a tortoise. The design symbolizes Marutasu's role as a new gathering spot in the city of Marugame.