Oh just make the decision for all of them. No one's possibly wary of him or anything.
But really what choice do they have? Miyako alights down with Iori and they huddle in a sand dune as the Digimon try to fight back. Tailmon is the only defense they currently have close enough to them. Wormmon has never evolved. Ken is clutching to him too tight for anyone to ask him to. But the little caterpillar lifts his head and says, "Ken-chan is here because he is meant to be very kind. And if all of us can be that way, maybe we can save Patamon." His little reedy voice is uncertain, and Ken's eyes are watering again.
But Takeru thinks he understands. "Everyone's traits are ours," he says, and thinks of Apokarimon. "And our traits belong to everyone."
At these words something begins to glow in his chest. Something soft and warm that he had left behind to heal. Hikari's hands close over his. Then Miyako's. Then Iori's. Then Daisuke, who holds his hand out to Ken.
Ken hesitates, shivers at a chill. Then he joins them. And a glow engulfs them and the Digimon who have hit the sand. Even Wormmon shines.
The master of the sea chuckles fondly.