Rhythm always thought she was weak.
That was why she hid whenever someone ran past, or why simple things like nightfall would make her jump in fright.
He found her one night, huddled in a dark corner of a cave, soaked from the downpour. She shivered as he knelt before her, his multiple eyes frightening her.
As soon as Argomon spoke however, her fears dissipated.
"Hello, I'm Argomon. Are you alright?"
After that, it was nearly impossible to tear the two apart. Argomon protected Rhythm, from nature to other Digimon, it didn't matter. Rhythm finally felt safe.
And then the humans attacked. Rumors surfaced, word-of-mouth stating that SaberLeomon, even Mercurimon, had fallen against the horrible beings.
Something changed in Argomon. It was subtle, Rhythm almost missed it. The other Digimon was quiet, moreso than usual. And it struck her as odd.
And then he vanished.
It was during the night, much like when they first met, rain hitting the ground hard.
Rhythm stayed in their hideout for weeks, waiting, hoping, Argomon would come back safely.
It was the first time she truly felt scared for her friend.