شبکه واژگان: ～なければならない

A social, legal, or moral responsibility that an individual is required to fulfill. It refers to actions one must take due to laws, rules, or ethical standards rather than personal choice.

Describes something that is essential, required, or must be done to achieve a specific purpose. It functions as both a noun and a na-adjective in Japanese to express necessity.

Naturally; as a matter of course.