The hero Quinn has slain the Demon King and brought peace to the world with the help of Celeste, the great fairy of the forest. Now Quinn must repay Celeste for her aid with the promised cost: her firstborn child.

However, Quinn refuses to settle with a husband, nor have a firstborn child that Celeste can claim. Using this loophole, she plans to get out of ever paying what she owes.

Angered by Quinn's ungrateful arrogance, Celeste begins plotting her revenge. She'll make sure Quinn has a baby, but not with a normal husband... No, she'll create a monstrous, evil creature to sire the child. A slimy, tentacled beast made of mind-melting love potion will make the so-called "hero" and all of her companions regret leaving a debt unpaid.

Slimy Sextet is a visual novel where you play as Celeste's slime minion, helping her carry out revenge via tentacle sex! Do your job well by fucking all the girls silly, and who knows... maybe you can even turn the tables on the great fairy herself? Of course you can.

Features:
- Choose your slime's gender! Are you an alpha male or dominant diva?
- Wrap your tentacles around 6 sexy Heroines with multiple scenes each!
- Make choices to reach multiple endings! Will the girls be your slaves, or loving brides?
- Admire high-res art assets made for 4K!
- Treat your ears to full English voice acting, and an original soundtrack!

https://store.steampowered.com/app/1189070/Slimy_Sextet/
https://belgerum.itch.io/slimy-sextet/

As there appears to be no text besides the title, this should probably be tagged l:speechless, not l:english.

Base +7, Azura Meta +6, Aisk1000 +10, Belgerum +6, Firanel +6

I think it was tagged as such because it's an English developed hentai.

Base +6, Belgerum +6