Daedalus

The girl who has appeared in Tomoki Sakurai's dreams since his childhood possesses a distinctive form, with two pairs of wings on her back. Although her appearance is that of a young girl, she is, in fact, an ancient being created approximately 70 million years ago and is also the creator of Ikaros and the stone tablet (Rules). The upper half of her face is always inexplicably concealed, and she has several traits that differentiate her from Ikaros and other Synapse beings. Initially, she conveyed abstract messages to Tomoki Sakurai, such as "Help me, I'm imprisoned in the sky," but after Ikaros appeared, her communication became more specific.

This girl is one of the two scientists in Synapse renowned as "geniuses" and is the originator of many creations, including Ikaros. She is the individual behind most Synapse-related inventions, including the stone tablet. She opposes Minos and has established her own castle separate from the castles inhabited by other Synapse beings.