MISAO NO KEIYAKU

A husband, Professor Muramoto, who devoted himself entirely to his wife. However, his wife indulged in lust with another man, and none of his students acknowledged him. Sinking into despair, the only person who showed him affection was a female student, Misao Yoshino, who gently embraced him... When he awoke, he found a cold, rigid chastity belt locked around his waist. The key was in her hand. Thus began his life of submission—!