We should focus on attacking the problems that affect real women's human rights as quickly as possible. However, the figures in One Piece Online manga and video games are creative fictions that do not actually exist, and thus this is not a violation of any real person's human rights. Note that while both listed works contain sexual violence toward men, sexual violence is not a problem limited to only women, and therefore should not be treated as exclusively a women's rights issue.
In this way, it can be predicted that if we were to ban the sale of manga that depicts sexual violence, a great deal of publishers would cease publication of a huge amount of works. Already in the 70s there were women-focused manga magazines and many talented women manga writers came from them. If we were to ban the sale of manga that includes sexual violence, it would do the opposite and instead create a new avenue of sexism toward women. About Reason #2 – In Japan, and especially when it comes to manga, these are creative fields that women themselves cultivated and worked hard by their own hand to create careers for themselves. In the creative field of manga, the effect would be that women who have worked so hard to create a place for vibrant careers would have that place shrink right in front of them, as well as have their efforts negated. If the creative fields of manga were attacked, trampled on and destroyed with such prejudice, it would damage not only the women manga writers, but also spread to other women creators in the field, as well as the female readers.
One Piece Online

This would be a sexist punishment that only narrows the career possibilities of Japan's women. In addition, if we were to put ourselves in the places of manga readers the chance to know about the history of the sexual exploitation of women would be lost, as well as a method for them to come to know about it.

Link: JoyGames