In the Ghost Island War, the battle screen of Kaida Dama joining hands against the five supernovae is really wonderful, and the five supernova stars all show different abilities, and the battle against the "Double Emperor" is not too inferior. Of course, from the result alone, no matter how strong the five supernovae are, they will certainly not be able to match Kaida's mother, after all, the two four emperors were partners in the same ship many years ago, and they still have a certain tacit understanding.
The "Double Emperor" shows the style of the legendary pirate in the battle against supernovae. But then again, assuming that the Four Emperors did not participate in this battle, then can Old Master Kaido defeat the five supernovae by himself? Let's discuss it briefly with me.

In the early days, Kaido will inevitably have the upper hand
Looking back at Kaido's combat performance in the Battle of Ghost Island, it is not difficult to find that his most outstanding ability is "staying power". Because Kaido is not human, his physical strength should be beyond ordinary people, and combined with the characteristics of animal fruits and rich practical experience, Kaido has not been greatly affected by his physical fitness even if he has carried out many wheel battles. In addition, Kaido's ability to resist blows is also very good, as long as it is not a fatal injury, it will heal quickly over time.
On the other hand, the five supernovae, although the abilities of the five people are not the same, but they have a big gap in physical fitness compared with Kaido. Therefore, if Kaido fights with five supernovae, as long as he uses the physical advantage, he will not reduce his combat effectiveness due to the large number of people on the other side, basically a "thunderous gossip" to knock one unconscious, and can suppress the five supernovae very well in the early stage of the battle.
But it is worth noting that this is only the early stage of the battle, and those who are familiar with Kaido know that he does not like to "repair the knife", so even if he suppresses the five supernovae, he will not completely win, which gives the supernova side a chance to "turn over".
After Luffy and Sauron gain hegemony, they will turn the tide of battle
The key for the five supernovas to defeat Kaido is whether Luffy and Sauron fully master the Overlord Entanglement, because only high-level domineering attacks and certain familiar moves can hurt Kaido. In the previous rooftop battle, because Luffy and Sauron did not fully grasp the "hegemony", many seemingly effective attacks were turned into "ineffective", and only Sauron's "trick" caused Kaido to suffer substantial damage.
In the follow-up plot of Luffy and Kaido's separate battle, Luffy has slowly mastered the use of "hegemony", and can currently be "briefly on the same level" with Kaido, which shows the importance of "hegemony". In other words, as long as Luffy and Sauron fully master the ability of "Hegemony" through time, it will greatly improve the effective number of attacks of the supernova side, then Kaido, even if he has strong resilience and defense, will inevitably fall completely due to the attack of "Hegemony".
If Luffy and Sauron want to quickly master the "hegemony" in actual combat, they must drag Kaido as much as possible, which means that the remaining three supernova stars must do their best to contain Kaido. As long as Kidd and Luo use the Fruit Awakening move reasonably to actual combat, then they can play a role in suppression, which can refer to the battle between the two of them and the big mother. As for Kira, it was enough to disturb Kaido as much as possible.
Kaido alone could not defeat the combined strength of the five supernovae
Assuming that Luffy and Sauron master the hegemony, kidd, and Roe's fruit awakens, then Kaido will find it difficult to defeat the five supernovae on his own. In fact, in the current plot, Luffy's own strength has been able to equal Kaido for a short time, which shows how powerful Luffy is after mastering the "hegemony". On the other side, in the battle between Big Mama and Kidd and Luo, it is impossible to distinguish between victory and defeat for a while, and it can be seen that the two still play a certain ability to suppress.
Therefore, Kaido's attempt to defeat the five supernovae of the "complete body" is basically unrealistic. Of course, if Old Master Kaido mended the knife in Luffy and others without mastering the "hegemony", it might be a chance to win.
Do you think Kaido alone can beat five supernovae? Please comment in the comments section.