This article tries to identify the reason why feminism in Japanese society is not active in terms of linguistics. Therefore, Japanese negative YouTube comments about feminism are analyzed from the perspective of legitimation to reveal the awareness of Japanese people. First, the results of codifying the comments os that there are 91% of negative comments, and also, the results of analyzing them in terms of legitimation is that classification is used the most, and quotation > evaluation > definition > emotion > speculation and estimation > example > authorization > cooperation = others are seen. Some awareness about feminism in Japanese society is confirmed from these result. First of all, there is the premise which is the reason why they are feminists is that they are not pretty and are not seen as sex objects. On the other hand, classification strategies which only a part of feminists(Twi-Femi, radical feminists, etc) are criticized and, the past feminists are sympathized, however, modern feminists are not sympathized are found. Moreover, quotation strategies which not only the current situation in Japanese society but also the past such as the war era and school days are used to express the opposition to the needs of feminism. Furthermore, the premise in which feminists and females have the privilege because they are in a weak position and knew that are revealed with evaluating the character of feminists, definition, and example strategy. Also, in the case of speculation and estimation, the one claim which female are seen as sex objects because they makeup and dress up, therefore, this awareness affect to the disgust and victim-blaming. Besides, through cooperation strategy, many opinions in which gender equality is impossible because there is the scientific basis of the difference between brain and body between males and females. These discussions are revealed in feminism researches, however, these are also found in YouTube comments from the perspective in linguistics in this research. It can be able to do the comparison research to other nations by using this legitimation forms.