Zetsu-Rin! Invisible Hentai Man: Second Virgin and Magic Potion (2016)

Sinopsis

The protagonist, who uses the 'Elixir of Iga' for self-interest and spends his days in the sake pond meat forest, makes a mistake in using the medicine and becomes an invisible human. An erotic comedy that is bound to burst into laughter about the true love of a man who has lost everything and finally finds true love with a woman of destiny, full of naughty perspectives.