Dangerous Sisters SAKURA VS Naughty monster with tentacle

Sakura and Momo, new members of the Dangerous Sisters, go in place of Jun and Nana, who have been seriously injured in a battle with lewd monsters.
What waited for them on the field of battle were hair-raising tentacle beasts.
The beginner fighters fight against myriads of tentacles, but are hit by a poison needle and rendered unable to move!
Momo is taken to their hideout by multiple fighters, and Sakura, left all alone, awaits her fate of tentacle violation.
As she becomes the sacrifice for the erotic monsters and thoroughly tormented by tentacles, what will become of this ultimate of tentacle violation? And what of Sakura?
The CG is at 800x600 and includes 44 pages with variations, available in a larger size as well.