A respectable teacher named Siz was secretly having relationships with her students. She carefully planned their rendezvous to avoid getting caught but eventually one student became more daring, seeking thrills even at school... This can't continue! Despite trying to refuse him, she succumbed to his advances during a special lesson where her sexual stamina skyrocketed due to his exceptional technique. At least try to be discreet, she thought, biting her lip as she silently reached climax. Note that the contents may vary depending on the recording method.