What is it?: Pictures and Json file replacement to include loli content back into the game, if you have downloaded the "no-loli version" of the game.
Instruction: unpack the folder named "game" into your "Jack-o-nine-tails v2.1" folder. You will be prompted to replace files, do it.
Password: There were problems in the past; without passwords, links were dead within hours. You'll get the password in F95Zone's Jack-o-nine-tails thread, very first post.