"Harnessed" are implanted on all magicians.
Purpose
It's a nest that use to control Magicians, otherwise threatening them by ejecting them, in order complete their missions.
The 3 Buttons
- Top = Could either unlock a new ability or cause the drasil inside to take over the host
- Left = Force Eject
- Right = Hang Up
Special Harnessed
Some people like Valkyria have a special harnessed which is harder to eject.
Location
Harnessed are located at the nape of the neck of Magicians.
Trivia
- The "harnessed" is actually a type of nest.
- "Harnessed" sounds like "her nest"
- According to Kana Tachibana, the Harnest cannot be destroyed by any form of magic.
- Chapter 114 reveals that Hatching is not something that happens at random, though the specifics are currently not known. Onodera makes mention of this in a malicious tone, indicating that she is keeping it to herself for her own interests rather than the interests of The Organization.
- A Drassil embryo that is grown without being placed inside a host looks like a human child, except for the fact it has no mouth and has eyes all over its head.