Leaf Level 1

You and Leaf sit in a field. She sits contently next to you, nude of course.

"Of all the people to be my trainer, why did it have to be you?" she asks. "I mean, why does it have to be somebody who bullies me, harasses me, forces me to do things I don't want to do, and constantly makes fun of my boobs?"

"I think you're just jealous that I haven't fucked you yet."

"Wha- What? I... no. I hate you! Why does the worst person have to be so cool and funny and smart and hot! And have such a massive cock! Curse you universe!"

"Sounds like you wanna fuck me."

"Well- I... uh, didn't mean that, I didn't mean to say that out loud, WAIT-"

"Leaf, start riding my dick."

You lay back, letting the cool breeze blow in your hair, as Leaf hops onto your cock and starts bouncing up and down. You relax, and think to yourself about how amazing your life is.

A FEW MINUTES LATER

Leaf is suprisingly not just good with her mouth. She gave you some of the best pussy you've ever had in your life. Finally, you both climax, you spraying your load all over her face.

All of a sudden, a ball of light begins to emerge from Leaf. It slowly starts to envelop her, until finally, with a flash it evaporates. You look down, only to see that Leaf's tits have grown massivley, in fact they're some of the largest tits you've ever seen!

"What hap- oh my god! Look at me! I HAVE TITS NOW!"

Suddenly, her tits pop back to her normal size.

"Wha- Oh. I know what happened! I leveled up! I think what just happened is I just used the move EXPANSION. Not sure how I could use it in battle though. Maybe sometimes you'll let me use it outside of battle though? Pretty please?"

"What? And let you have normal size tits. Not a chance."

"Even if I suck your cock?"

"I'll consider it".