visage, face, trace, shadow, memory, (kokuji)
俤 centers on a lingering impression of someone or something: a visage, a trace, a shadow, or a memory that remains after the original is gone.
俤 is a kokuji (a kanji created in Japan) that combines 亻 (person) with 弟, which likely contributes the sound and the idea of a younger brother or follower, suggesting a person's lingering image or trace.
A person 亻 beside 弟 (younger brother) suggests someone looking back at a younger sibling's face or remembering their features. 俤 is the visage or memory that stays with you.
For おもかげ, imagine a person gazing at a fading photo of their younger brother and whispering 'Oh, my kage (shadow) of memory': 'Oh, my kage' -> おもかげ, capturing the trace of a face.
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