Joshikousei to Washitsu - Zenmyou Sumire - Kyonyuu Shoujo Etsugyaku no Kinbaku Shiiku

女子高生と和室　善明すみれ　巨乳少女悦虐の緊縛飼育, 女高中生与和室善明堇巨乳少女愉虐的捆绑饲养, Nügaozhongsheng yu Heshi Shanming Jin Juru Shaonü Yu Nüe de Kunbang Siyang

2013 Main Game Released

Visual Novel

Summary:

The last thing Sumire remembers was walking home from school. Now everything is black and she's been bound and cannot move. She tries to scream for help but her mouth is gagged. Finally a boy she knows from school arrives and she hopes that she's been rescued but her hopes are dashed when he strips off her clothing and begins to rape her. How long will the torture last?