Following the previous episode, here comes the second night of "Kachikochi Secret Club." This time, we reveal the surprising truth about what men do with their wet fingers after fingering. Do you wipe them on a tissue? On the sheets? Or sneakily rub them onto the girl's body? Your unconscious habits might actually be turning your partner off. Plus, inventor Machinegun Nishibori presents a groundbreaking new invention related to masturbation! Inspired by his creation, the actresses openly confess their private masturbation experiences. What tragic incident did Yuka Murakami face during her student days when she was deeply obsessed with masturbation?