Bell

A Bell (, suzu) is a mark similar in appearance to a collar that can be placed on a shinki by Mikagami. Although its exact purpose has not been stated, it is implied to be some sort of "marker" on the shinki it has been placed on.

Most notably, it has been used on Blessed Vessels punished by Heaven.

Casting Sequence
This technique does not seem to be a Song as it does not have a casting incantation, unlike other Songs.

Mikagami makes a horizontal motion with her hands, after which the Bell appears on the intended target.

Shinki marked by the Bell

 * Nana (formerly)
 * Yukine (formerly)