Yoshimitsu's first appearance was in 1994's original Tekken. Kunimitsu's story in Tekken 2 reveals that Yoshimitsu's blade is passed down through the Manji Clan's leaders. The clan is dedicated to a mission to help the weak and fight the oppression.
About one hour after cooking. After that, any food can become tainted and needs to be refrigerated to keep the bacteria in control. If it is uncooked, it needs to remain refrigerated-but will only remain fresh in this state for about 2 or 3 days at most.
If you're going by official guidelines, you should never leave meat out for more than 2 hours. Here's a quote from the Washington State Department of Health website: Some bacteria, such as staphylococcus and Bacillus cereus, produce toxins not destroyed by high cooking temperatures.