Also known as: 正面, 真正面, 从正面
An image whose subject is directly facing the viewer at a 0° angle. Their head, torso and hips (when visible) should all be directly facing the viewer and not turned to the side.
The subject can be leaning forward/back, have their arms in the air, or even be upside-down; as long as they are not turned to the side at all, then this tag applies.