I translated this bonus chapter because I liked the creativity, it looked like fun, and to be honest, I tend to get bored with most hentai. But *apparently* it's too fetish, even the proofreader didn't want to have his name on the project^^ Well, see for yourself if you like it.
I'm not going to translate the other chapters, so if anyone is interested in doing the complete tank, you have my permission to include this chapter if you like (give credit though).