and while members of other japanese sects often do n't like to acknowledge their involvement in the groups , his staffers sport stickers of the institute mascot , leviathan , a smiling blue sea monster with yellow gills , accompanied by a slogan : `` love -rsb- love -rsb- leviathan -rsb- '' the group is `` completely changing the image of religion '' in japan , says hiromi shimada , assistant professor of religious studies at japan women 's university .