Reeling device and reeling method

A reeling device that reels a yarn-shaped body, the reeling device comprising:

• a first spool body rotatable about a first rotation axis;
• a second spool body rotatable about a second rotation axis;
• and
• a yarn transfer portion capable of moving the yarn-shaped body between the first spool body and the second spool body, wherein
• the first rotation axis of the first spool body and the second rotation axis of the second spool body are parallel to each other, and a position of the first spool body around which the yarn-shaped body is to be wound and a position of the second spool body around which the yarn-shaped body is to be wound are arranged side by side on an imaginary plane orthogonal to the first rotation axis and the second rotation axis, and
• after a collection of the yarn-shaped body reeled a predetermined number of times is formed in the first spool body, a yarn-shaped body leading portion of the yarn transfer portion moves a yarn from the first spool body to the second spool body along the imaginary plane.