Engaging with doujinshi works like this supports and encourages fan creativity within the Dragon Ball community. It's a way to celebrate the fandom and contribute to its richness.
Now, the user wants a feature, so maybe a new aspect or element to include in this doujinshi. Features could be art techniques, plot twists, character pairings, etc. Let me brainstorm a few possibilities. Bulma Adventure 4 -v1.0- -YamamotoDoujinshi-