I am assuming the full intended phrase is likely related to a character archetype or a specific narrative trope, possibly: "Kasen Yurusmaji - An Innocent Smile and a Dirty Uniform" or "An Innocent Smile and a Dirty Unspoken Truth."
– A beautifully uncomfortable mirror held up to performative innocence.
, one of the "Big Four of the Mountain". She purposefully severed her own arm to seal away her "evil" Oni side and took up hermit training to suppress her true, violent nature. The Conflict of Identity: