Used Hijikata’s and Saito bath salts last week. Each packet comes with a sticker and two separate packs of bath salts. The sticker is printed with the line that the character is supposed to say before you go to a mixed-sex onsen with them *nose-bleeds*!
Mixed-sex onsen is not something of the past: we still get them nowadays! All the onsen hotels I have stayed in before contain mixed-sex onsen! I DID NOT want to go to one at all! If Souji were to come with me then that would be a different story XDD;;.