Script Ideas for next reward set (Pixiv Fanbox)

Next reward set is going to be several scenes of this previous doodle.

I need help for writing Lucoa and Iruru's dialogues.

Iruru x Lucoa Doggy Urethal Sex

- Iruru penetrates Lucoa's Penis and exchange cum each other

- exchanging cum by taking turns, makes their balls bigger and bigger

- Both having huge ball cumflation at final stage

- similar to my old work : https://www.pixiv.net/artworks/66600154

Scene ideas so far -

1.Starting Idle

2. Both thrusting their pp

3. Iruru cums, makes Lucoa's ball bigger

4. Thrusting again

5. Lucoa cums, lucoa's ball get a bit smaller, Iruru's ball get a lot bigger

6. Thrusting again

7. Both cum explosion, their balsl became huge.

Please gimme your ideas :)

I'll pick random dialogues which looks interesting so please don't mind if I don't use your idea :3