Who can beat yujiro hanma?

Yujiro Hanma represents the most powerful state of human being possible in a world like our own. He is essentially a "realistic" persona. He is powerful enough to crush a prehistoric elephant with his bare hands, and knows many forms of fighting, and has never lost. You'd have to read up on his character in the manga series he appears in to fully grasp the nature of his character; but he in virtually unbeatable by any single unarmed person. (and extremely hard to take down even with a team of highly trained heavily armed assassins, I'm very sure.)