Destiny Realized! I'm Herissmon!

Synopsis
The is returning home one day with their partner Digimon,  on their phone. Napping on the train home, Pusurimon wakes them up when their trains appears to undergo some sort of transformation. A Spiral attacks the Protagonist, but Pusurimon emerges from their smartphone and digivolves to to defend them. The Spirals keep coming until Takumi Hiiragi and save them. The pair head off to find the source of the distortion, leaving the Protagonist and Herissmon to be surrounded by Spirals. saves them and continues working with them against the Spirals, believing their defeat will fix the distortion. Eventually, the distortion disappears, and they all return to the Human World. Takumi returns and warns them away from the distortions, which he names as Digital Points, because Spirals appear there. Takumi and Dorumon head off, but Herissmon finally realizes that he has incarnated in the Human World and is thrilled to spend time with his partner. The Protagonist and Herissmon then meet another Tamer pair, Michi Shinjo and. An continues to watch over the events.

Digivolutions
(Number indicates order of occurrence.)