Watch full Jigoku Sensei Nube Episode 23 English Subbed online for free in HD. Full HD Jigoku Sensei Nube Episode 23 English sub streaming online. Mystery of the 0 hours, 0 minutes, 0 seconds!? Seven Mysteries: the opposing mirrors. Kyoko and Miki reflect themselves on an opposing mirrors on the school at midnight showing them olders, now each time they reflect themselves they see each time more and more older.