
Well, the muzzle straps are designed to fit his head so we could say that locks or buttons were used to secure the fit. But given that locks during the setting were not a wide variety, it could be that buttons were the safest and easest option. Who would want something heavy and bulky behind someone's head? Clearly not our Empress since she values Sang a lot.

not sure i follow your explanation lol
but i was jokingly referring to the second panel on page 6, ch 91. theres a middle strap that goes into his forehead and disappears like a secret. yes his bangs cover part of it, but realistically the rest should be visible over his head. i just thought it was funny
How does Sang keep the dog muzzle strap underneath his wig though