Bakunyuu Hoken Onna Kyoushi

The Empress of the Infirmary, who has been ravishing others one after the another in accordance to her carnal desires sets her next target on a slender, beautiful boy named Shuichi.

Yurika successfully seduces him and devours his virginity as usual, but her only miscalculation is that Shuichi's cock is too big, even for her to handle.

Nevertheless, after making love as they had hoped, they lay on top of each other again and again, enjoying a dizzying climax.

Before long, Yurika is the one captivated by Shuichi, when she planned to make him her captive.

[From official site]