While her fingers nearly encroached on you, with a stroke of luck, you were struck with a frostbite feeling all over your body. The shrink ray, apparently, is still holding on its effect on you, and you shrunk down to only half an inch. Though the effect of the shrink ray is now less painful, you were much smaller now, and continuing to ascend Natsuko's body will be like climbing a small mountain now. Her fingers, now the size of a bullet train, nearly felt you, and it was the shrink ray that saved you back then. You decided to stop climbing her body for a while. You climbed up until you reached her belly button, and you crawled inside the depression. At 2 inches, you would not fit, but at half an inch, it felt like a small fleshy cavern for you.
Meanwhile, Natsuko decided against looking for the itch, and continue her date with Kazuki, though she could feel a little itch down her navel. She chose to ignore it, to your relief. As their conversation got a little boring and beyond your understanding, as you still could not speak much Japanese, you began to doze off, perhaps the shrink ray effect is still tiring to your body. You dozed off, inside Natsuko's navel, while she continues her date with Kazuki.
When you awaken, all you see was black, until you peered out of Natsuko's navel and you realised that the black was Kazuki's leather jacket. You saw that they were back on his motorcycle, and looking up the sky, avoding the blockage that is Natsuko's upper body, you can see that is already night time. It appears that they are done with their date, and Kazuki is giving her a lift home. You crawled back in, realising that there's nothing you can do now.
At Natsuko's home, the young couple had a little chat. You can't help but eavesdrop, and you realised that the young couple ...