The video is about a challenge called the "One week same diet challenge with Kyoichiro" where Harukun (H) has to eat the same food as Kyoichiro (K) for a week. K sends H a LINE message with a photo of what he's eating, and H has to replicate it. The challenge starts with a massive breakfast and includes a 24-hour hamburger challenge, sushi, and a Japanese BBQ feast. Throughout the week, H struggles to keep up with K's eating habits and often feels full and uncomfortable. On the final day, H decides to clean up all the leftovers from the week. After the challenge, H reveals that he gained 1.6 kg (3.5 lbs) and warns viewers not to try this challenge.
Here are the key facts from the text:
1. The challenge is called "One week same diet challenge with Kyoichiro".
2. Harukun is doing the challenge with Kyoichiro.
3. The challenge started with a meal that Kyoichiro sent to Harukun via LINE message.
4. The meal consisted of 5 toasts with ham and cheese, a cup of corn soup, a butter roll, yogurt, and tea.
5. Harukun had to eat the same meal as Kyoichiro for the entire week.
6. Kyoichiro sent Harukun a message with a photo of 10 MacDonald hamburgers.
7. Harukun had to eat 7 hamburgers as part of the challenge.
8. Harukun received a message from Kyoichiro with a photo of a curry, and Harukun had to eat a curry as well.
9. Harukun had to eat a variety of foods, including sushi, fried chicken, and rice balls.
10. On the 6th day of the challenge, Kyoichiro joined Harukun for a meal at a Japanese BBQ place.
11. The meal consisted of thin and thick beef tongues, sirloin sushi, beef thigh, and large rice.
12. Harukun finished the challenge on the 7th day.
13. Harukun's weight before the challenge was 67.5 kg (148.8 lbs).
14. After the challenge, Harukun's weight increased by 1.6 kg (3.5 lbs).