___ 約 [promise]

糹 is in  ___

勺 is in  ___

On-reading: ヤク as in 予約 yoyaku ___

YAKU promise | contract

約束 yakusoku promise | vow | pledge  束 [bundle]

契約 keiyaku contract | agreement

予約 yoyaku reservation

→ 予約 する yoyaku suru to make a reservation

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