A Bio-Hybrid given power by Kurata, Nanami works with Kouki and Ivan to take out DATS. Though she possesses no Digimon partner, she can herself transform into a Digimon. Her first form is the dragon-like BioQuetzalmon while her strongerform is BioLotusmon.

She is paired as a sort of rival to Touma, as they both rely on intelligence and strategy over raw power in battle. She over goes as far as to try recruiting Touma onto her side.

For no explained reason, she dresses in Gothic Lolita fashion while in human form and even carries around an umbrella. Nanami is very calm and calculating, yet also bored easily.