henki is normally in the accusative case (which appears as either the nominative or genitive case depending on the context), but is inflected in the partitive case to express an ongoing or incomplete action or if used in the negative.
The object ("someone") is placed in genitive before henki. If it is a personal pronoun, henki may also receive a possessive suffix (see the entry), and the pronoun may then be omitted if it is a first-person or second-person pronoun.
