Partners

Kris (left) and Vic (right) are the partners of KoHirumon, sharing one digivice between them.

Vic (full name Victor) is all about encouraging KoHirumon's bad habits, ranging from sneaking in another serving of food to tapping into the perfect core more regularly

Kris (full name Christine), is the opponent. She disapproves of her brother's antics, and rather actually do what's best for KoHirumon. (I.e. not tap into the perfect core so much)

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Bonus tidbit

When they were younger, Kris would often go into her brothers closet and wear his clothes. Why? She didn't like the overly "girly" clothes her parents got her. She almost never wears her own clothes, and much prefers the feel and functionality of Vic's clothes (they actually have good pockets).

As a result, their parents just gave up on buying clothes specifically for Kris and just bought 2 of whatever Vic picked out, giving the spare to Kris.

After a while the siblings just started decided to wear the same clothes as each other at the same time.