Suwariwaza
By Kuseru

This martial art power allows the character to use full bonuses against a standing or prone opponent while kneeling or sitting. In addition they can perform backward sweep, forward sweep, and tripping/leg hooks against the standing opponent, and can engage in unarmed combat at Combat Range.
Seated/Kneeling fighting: Penalties are half bonuses for both opponents. No kicks can be performed and both combatants must be at grappling range for unarmed attacks and combat range if weapons are used.
Fighting where one person is prone and the other is kneeling/seated: Prone opponent suffers from half bonuses and kneeling person has no penalties. No kicks can be performed by seated/kneeling person and both participants must be at grappling range for unarmed combat. Seated/kneeling person may use weapons at combat range against prone opponent, without fear of retribution.
Fighting where one person is kneeling/seated and the other is standing: Seated/kneeling person suffers from half bonuses to all combat rolls. If unarmed, the seated/kneeling person can only engage in combat at grappling range, with weapons they can engage at combat range. Standing person suffers no penalties and has a +1 to all combat rolls.