【Studio Bind】Sperm Bank – CG of being restrained by the sperm bank’s sister and having semen and squirt squeezed out of her

You live in a country where you are obligated to donate your sperm to a sperm bank when you become savvy.
The sister of the sperm bank has her whole body bound tightly and is relentlessly squeezing her.

It doesn’t matter how many times you scream, faint, or squirt, you will never be released until the tank is full.

There is no cursing or derogatory element.
The concept is that the words are gentle and the milking is intense, forcing you to ejaculate over and over again.

[Contains]

-Full Restraint
-Continuous Ejaculation
-Glans head torture right after ejaculation
-Squeezing masturbation
-Male squirting (lotion gauze – electric masturbation)

and more

Basic CG ALL monochrome 11 kinds (including 7 kinds of difference support) 70 pieces in total including difference

12/2019 [Additional updates].
A kind of restraint 69 blowjob blame CG was added as a commemoration of 2000DL (24 diffs).
2 illustrations without differences that were uploaded on Twitter for 1000th anniversary are also included.

After the update 14 kinds in total (including 8 kinds of differences, 96 pieces in total including differences)