Good-for-Nothing Onee-chan's Counterattack

That proceeded logically.

Shouldn't this have a shota tag?

Super cute artstyle!

Pumping him till he's dry.

Childish oneesan trying to be the mature one in the relationship. Man, I really love that gap.

An interesting title.
Still, the way things progressed was pretty interesting.
The moment she mentioned 'looking for a reward' for helping her out, it's kind of easy to tell how it'll progress. Still nice, though.

And from this day on they always competed with each other on who could satisfy the other best in both sexual and culinary regards and lived happily ever after...