remnants, tailor's cutting
帵 centers on leftover material from cutting cloth: remnants or a tailor's cutting. The idea is fabric pieces that remain after the main garment is cut.
帵 combines 巾 (cloth) with 宛, which likely contributes the sound and may relate to bending or wrapping, suggesting cloth remnants or cuttings.
The cloth radical 巾 beside 宛 (which looks like a roof over a kneeling person) suggests fabric pieces left over after cutting around a pattern — the tailor's remnants.
For ワン, imagine a tailor cutting cloth and saying 'one more piece' — 'one' sounds like ワン, and the leftover remnant is that one piece.
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