My shadow technique works without them, but hand signs are necessary to summon any shikigami.

[ Megumi settles on the couch, sitting in a casual way despite his usually polite demeanor (aka, manspreading) and resting his hands on his knees. He watches the dogs as they investigate the bag, their tails wagging slowly as they work.

There is someone he knows back home who lost their technique after losing a hand. He knows he'll be quite crippled if he didn't have the use of his hands and fingers. Megumi glances at the older man with some curiousity now, almost like he's asking for some sort of guidance given that Matoba is the more experienced exorcist. ]

Do you have another suggestion?