In history of aesthetic studies in modern Japan, after appropriating Western aesthetics, Japanese scholars have been trying to establish Japanese aesthetics as a discipline. We usually find their efforts following the model or conceptual frames of Western aesthetics, then locating those categories unique to Japanese cultural tradition such as 'Wabi', 'Sabi', etc. in rational ways. We could call this type of method as application of category theory of Western aesthetics. However, we should distinguish the differences between aesthetic categories, concepts and terms. In this paper, I will treat the example of 'the sublime' that could rarely be found in natural scenery in Japan, referring to tentative remarks in Japanese literature, and being skeptical about their logical foundations different from those of Western aesthetics. Rather, illogical or irrational character would suggest the uniqueness of Japanese aesthetics that may make impossible the adaptation of Western aesthetics. This paper will be the introductory step to further research.