information

On an island there was a huge abyss with a huge city, there was also a school for people who climbed down into the abyss to get rare items and get the abyss to know, but as students they are not really allowed to go deeper than 1000 meters, but there were two students called Muichiro and Tanjiro who were both interested in the secrets of the abyss and decided to sneak away and go deeper into the abyss themselves, on their adventure they both got closer and also found new friends.