The adnominal case (of this/that) is analyzed by adding such a presupposition, while the Japanese pronominal cases can be analyzed by removing the presupposition that N (x) from each clause of (23).
the pronominal uses also have implications for the animacy/sentience of their referents; for instance, are/sore/kore in general cannot denote a sentient entity, and neither can pronominal this/that (except when they occur as the subject of be, as in: his assistant.