Doukyuusei no Oba-san o Dorei ni Shitai.

My classmate's mother is a seductress. She teases young boys.
That fact changes completely when her slave training begins.

Her son bullies me. So I'm going to bully the hole he was born from.

One day a cute shota boy is an attractive older woman's plaything. The next day their roles of master and slave are reversed. Domination and slavery are the foundation of this erotic adventure game.

[From DLsite English]