Anything underhanded is systema.
Even when it's not about fighting but social manipulation.
This is getting the way of Nyarko-san, where "Space CQC" (Close-Quarter Combat, basically melee combat... in theory) is whatever you make it to be. Including grenades and lasers. Or changing clothes.
Thx for the chapter , this is a pretty good skill but you need to have already a connection with your target atleast we can use this knowledge to know when it is used on us.