TV show 90s ~ 2000s, each set is different of all, in the 1 episode: " one group student go to the forest to find the treasure, they find the treasure in the cave, see one jars and chests, unfortunately they spilled jar, which is the blood, the sky suddenly darkened, open the chest to the letter which, as their record would be the one to save the world by killing 1 person of them, and jars filled with blood drawn , and they peel then start killing you visit them , take blood poured into jars, then it was light