The Japanese "bento" culture is known for being more than just a meal; it showcases the creator's affection and artistic sense. For this reason, the emoji also symbolizes "preparation" and "care."

It's also familiar due to its similarity to the Korean "dosirak" (lunch box) culture. Beyond food, it can be used metaphorically to describe a well-laid-out plan or a neatly organized project, implying that everything is perfectly prepared.