Things never happened the way one intended them to. With the small mistake that cost Alfin a whole two years, many of his previous plans came to a failure. Among which was the secret of the infected fruit that was deteriorating with time.
And when it eventually turned into something entirely else, Wilkis who had connected with the cosmic data stream also understood the usage of this fruit and its ability.
Although he was not sure of it in detail, he understood that the resultant egg that was born out of the fruit was waiting to merge with something else and that something could be anything with a power source in it.
Which not only included him but his own mecha that silently waited for more upgrades. But as things were, Wilkis still couldn't make up his mind completely.
Because if there was a problem caused during the upgrade process and merger, his mecha might turn useless, same as the egg in his hand.