Plantium's offshoot, meanwhile, goes into a fit of insane, distorted laughter in the background; the gravity of the situation he had stumbled upon after melding with the Tower Key - having originally had a different goal in mind at that time, no less - warping his mind within mere seconds, coincidentally making him fail to notice what Zenmei just did.
"To think, that the answer I was looking for - the means to remake the world and secure my legacy - lied in the bumbling antics of you foolhardy heroes, all this time! Aaahahahahahahah..! What a twisted, ironic delight, this all is!"
Plantium, now possessing the Tower Key, floats about the room, giddy with the idea that his ultimate victory is at hand, and begins gloating rather obnoxiously.
"Yes, I suppose I should be thanking you people for making it this far, after all. With my immense power, coupled with the conflicting, focused energy your foolish wishes brought about in this key, the utter range and devastation of the Bell Tower's pulse wave will be ASTRONOMICAL when I release it! And it is upon those ashes, where I will make my own world; and the Metal Legion shall spread out to the stars! Not even the gods themselves will be safe from my wrath!"
Plantium starts laughing once more, but soon abruptly pauses during his flight path, hovering in mid-air, and eventually falls silent for a little bit.
The heroes should then suddenly feel a cold, piercing glare emanating from the possessed key.
"..Of course," he says, suddenly calm and collected once more, "I am afraid you all will not live to see my glorious new world - I can't have you pests screwing everything up after practically handing me the planet's keys. A little house cleaning may be in order first, though, before we engage with the roughhousing... hold on."
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Meanwhile, back outside the Bell Tower, Plantium's physical body promptly collapses into a heap on the airship deck it was previously standing on, much to the nearby Ripsaw's surpirse.
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"..There, much better! Now then, who'll be first to volunteer in your pathetic attempts at flailing angrily at me? The new world has a long eon ahead of it, after all!" Plantium's no longer offshoot, but rather full-on spirit resumes, before breaking into more mad laughter.