RISA Kouchou no Baai "Tsuiseki"

Miyazaki Risa starts for her new post as a headmaster of the private school, following in the footsteps of her father died recently. But she is not long before she finds the school has been actually dominated by an assistant principal (player) for years. He had embezzled a large amount of cash contribution and is afraid Risa finds the defalcation. He attempts to rape her until she becomes a sex slave of him to put her off the track.

[From DLsite English]