Just Pull a String—This Japanese Bento Heats Itself #shorts #japan

Keyword: japanese lunch box, self heating bento, japan train food, travel tech japan, bullet train food, smart lunch box, japanese food innovation, bento box technology, japan convenience, no microwave lunch Disclaimer & Credit: Original video belongs to @japanguide on Instagram. Full credit to the original creator. This video is shared for educational and cultural appreciation purposes only.