>>537987694
I skimmed through it. The fanfic ends with the beginning of the Buu Arc. The Goten with the Cell girl see here >>537989086 is the fanfic Cell's daughter grown up. This never happens in the fanfic because it ends way too early. The person who drew this made up the Cell girl getting with Goten event.
The person read the fanfiction (50 chapters 200k words btw) and inserted their own headcanon of what they think would have happened.
Tumblr is wild