So I decided to make an Android 18 plot hope y'all like it, im hoping for someone to submit this in the next Patreon poll if y'all do like it. (Im not a subscriber so I cant do it myself)
Android 18 expansion plot
Bulma needs help with testing out a new set of various expansion capsules that she just created so she calls out Android 18 to help test them out. Android 18 agrees and heads out to capsule corp, she arrives at Bulma's lab seeing Bulma prepare her newly invented expansion capsules, Bulma is eager to test them out and decides to start feeding Android 18 the capsules one by one it first expands her breast to a huge size making her nipples bulge out from her shirt, they start filling up with milk making sloshing sounds, Android 18 is surprised and likes her new breasts.
Bulma teases 18 with grabbing her nipples and fondling around with them making 18 blush, Bulma sees this and gets excited to see what happens next so she then grabs and feeds another capsule to Android 18 making her ass grow enormous with it being slightly bigger than her breasts and stretching her leggings and panties, it stretches so much to the point that it's thin enough and rubs her pussy making her cum a little. At this point Android 18 is too horny to think about anything else all she cares about is that she wants to get bigger and hornier. Bulma looks at Android 18 and smirks so Bulma without hesitation grabs all of the remaining capsules and decides to shove it in her mouth she lunges onto Android 18's massive breasts forcing her to sit on her huge ass and starts making out with her while transferring all of the remaining capsules via kissing.
Android 18's belly proceeds to grow next and it further expands all of her assets they start expanding at a extremely fast rate (except for her hands). The expansion rips most of her clothes off, as they kept making out while she expands, milk starts leaking out of her breasts. The expansion finally ended so Bulma lays down on 18's massive boobs but Android 18 still wasn't satisfied and wanted more but the capsules were finished so Bulma came up with an idea to inflate her even further with water, one of her helper robots comes in and forces a hose into 18's mouth and ass it then rapidly fills her up with water increasing her size even more making sloshy gushing sounds until she fills up the lab and her breasts starts spraying milk everywhere, she finally reaches her limit and the hoses detach, we see 18's new massive size with her being satisfied, blushing and a close up of Bulma kissing her at the end.
Main character Android 18, Side character Bulma
Dbs bulma outfit and android 18's classic Z fit with the jacket
Breasts + Butt > 3b expansion (milk)+water expansion