Famine Years: I Collect Scrap in Ancient Times and Fill My Barn with Grain and Meat

[Lots of Heroines + Pure, Unfiltered Satisfaction + Sisters-in-Law + Invincible + Slice of Life + The Protagonist Never Takes Things Lying Down and Always Gets Even]

Su Jue, an office drone, works himself to death trying to meet a deadline. When he wakes up, he has transmigrated to an ancient otherworld and been saddled with the original owner's bad reputation.

Ancient Su Jue: “Since you look just like me, take the blame for me. I won't make you do it for nothing: my three sisters are all beauties, so you can have them!”

Modern Su Jue: “Who am I? Where am I? Why didn't I inherit the original owner's memories when I transmigrated?”

Just as Su Jue stands there in bewilderment, his fierce and beautiful eldest sister comes after him.

In the end, Su Jue relies on the System to change the dynasty and ascend the throne as emperor.

Just then, the ancient Su Jue comes looking for him.

(The blurb doesn't do it justice. Read the story.)