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The armour of Laios Touden from Delicious in Dungeon. I always love finding a Japanese author who's done their research on armour from another continent and assembled something believable for their medieval-based European characters.
The parts are:
Gorget, protecting the neck
Pauldrons, protecting the shoulder
Cuirass, the plate armour protecting the back and front of the torso above the waist (a breastplate is only the front part of a cuirass)
Vambraces, protecting the lower arm
Faulds, protecting the front between the waist and groin. The equivalent protecting the back side is the culet. I'm assuming these are faulds and culet as they have the horizontal lines that on real armour were segments of plate
Update: This has been confirmed to be a hauberk, as it’s a robe of chainmail! Thank you to @lucky-fy A hauberk or mail skirt (depending on how high on the body it starts from) provides flexible extra protection for the groin and tops of the thighs
Poleyn, protecting the knee
Greaves, protecting the lower leg.