My mother remarried, and my new older brother was a perverted older brother who made me drink his sperm. Every day, he trained his sister to make her swallow his cum according to his taste. I don't want to see the sad face of my mother who raised me dearly... I don't want to destroy the newly formed happy family, so I, the sister, am forced to swallow my brother's sperm every day according to the 'cum swallowing schedule' made by my beastly brother. 'Brother, do I still have to drink?' The secret cum swallowing training life of just the two of them.
