Instructor, but I Transmigrated into a Male Zerg

After retiring, Lancelot, once the empire's greatest general, chose to return to his alma mater as a teacher. During a dorm inspection, he found a student hiding a printed novel.

After confiscating it, Lancelot opened it out of curiosity. The next thing he knew, he had transmigrated into the world of the novel and become a cannon-fodder male insect with the same name as himself.

The cannon-fodder male insect abused his female spouse, leaving him in a miserable state, before the gentle male lead came along and saved him.

The System bound to him chimed in and assigned a mission: torment the female insect in front of him and make him suffer.

Lancelot clicked his tongue.

He was an expert at making people suffer. He turned to the female insect kneeling on the ground and gave him an order.

"Stand up. Back straight, hands at your sides."

"Good. Hold that position for half an hour."

#Back home for vacation, and somehow I'm still doing extra drills

Theme: Always striving to improve