Kimiko is indeed present in the comics. Her character brings a lot of depth and intrigue to the plot. There are various storylines involving her that make the comics more engaging.
Kimiko's fate in comics can be quite complex. It might be that in one comic version she survives, while in another she doesn't. It all hinges on the narrative and the creative vision of the comic creators.
Yes, there might be. There could be fanfiction exploring their relationship in different ways, like a story where they overcome their differences and fall in love. However, it depends on the creativity of the fanfiction writers in that particular fandom.