WHAT if there is something we don't know yet? What I mean is that we know that the 10 families are strong enough to challenge the tower and climb but what if there is something else after that? Some people that can challenge Exis's in the tower? And Enryu is an example of those people?! I mean..he can use 9000 bangs at once..I don't think that even Urek or the 10 great families can do that..
If this theory somehow is real then would that mean that there were people that entered the tower before the 10 families? As stated in the comments, people said that SIU said that Enryu is not a Exis so that means that he must only be an irregular that has gained his power by climbing the tower and if he entered the tower before the 10 families that must been that he has been at the top already? It was stated in the manhwa that the highest floor that the 10 families came to was the 134th floor I think? And IF this theory is true and if there are people that can challenge even Exis, it must mean that they are very powerful and that would explain why Enryu can turn shinsoo on a floor to red? his control? It's almost like a power of a god?
It's been stated that the 10 families were the first ones to enter the tower many times which shows that my theory has flaws but you never know..but at the same time we were told that the tower has many mysteries and I think that the 134th floor doesn't have all the answers to these mysteries..
The 10 families thought that they were the first ones and made records so that they would be remembered but at the same time they maybe didn't know that there were a few other people that climbed before them? And maybe these people that climbed the tower first didn't want to make records of themselves so that people would know? This would explain why people didn't know who Enryu was before he made his appearance on the 43th floor and killed the guardian? How he was so strong? His shinsoo manipulation?
If he climbed before the 10 families..and got the power to challenge an exsis..would this explain why Headon can't find him? Because he is strong enough to even hide from guardians? Or what if climbing to the last floor will turn you in to a exis? That would explain why you can have your own story and control some of the reality inside the tower?
It was stated that Phantanium attacked Zahards castle and killed all his guards until he got to Zahard but then he left Zahard alive? The reasons to why he left Zahard alive are still unclear but maybe he wanted to make a statement or something? Maybe he wanted to show Zahard that there are some people that has already climbed higher than the 134th floor and that these people came in even before the 10 families? that these people are higher beings than the 10 families and could wipe them out whenever they wanted?