Tsuma Netori Kan: Bijutsu Kyoushi no Baai 1

Yurina Suzukaze, a beloved art teacher adored by her students, finds herself ensnared by her charming yet devious colleague, Sakakura. His obsession leads her into a hidden basement, where she endures weeks of relentless restraint and submission. Bound and helpless, she surrenders to his forbidden desires, transformed into his willing plaything, their twisted passion consuming her resistance until she embraces her new role as his devoted, pleasure-bound slave.