Poll on exclusive rewards for FTB 1.5L (Pixiv Fanbox)

I'd like to give exclusive Futabu 1.5L rewards, but I'm lack of ideas.

If you have any ideas

Please let me know your idea..😢

Here is my ideas. what do you like the most?

1.Futa on male version videos

2.Futa on Futa / Futa on Female(if F on Female / F on Futa)

3.Increase Coom volume(version videos)

4.WIP Video of Unfinished Projects