Medical Orbment (メディカルオーブメント), abbreviated as Orbment M (オーブメント・M) is a tactical orbment introduced in Akatsuki no Kiseki, Chapter 6: "Duty to Fulfill" on 20 June 2018.
Medical Orbment contains thirteen slots for Medical Quartz, which together form the shape of a regular hexagram. Lines formed by these quartzes, known as M-Lines, can be activated in order to unlock stat boosts, such as increased craft or arts damage.