Tatakau Shisho - Volume 2, Chapter 6: Final Past — Slaughter – Part 1

After transmigrating into a beast world, Rong Mingshi discovered that the people of this world experienced widespread mania. For example, when their emotions were abnormally agitated, they would become destructive beasts. If their emotions were abnormally low, they would shrink into their young beast form.

There is a type of energy stone that can cure this but it must be hand-carved into the animal form corresponding to the beastman. The more realistic the shape, the better the healing effect and the higher the repeated utilization rate.

In his previous life, Rong Mingshi’s ancestors started as craftsmen who grew their business and became wealthy.

Then a small store suddenly popped up on the Star Network, selling several small sculptures made with superb skill. The effect of the energy stone to soothe emotions could be felt through the screen and stirred up a sensation in the entire empire. However, this store owner was super lazy…

- Description from novelupdates

Ryo Tanaka, a struggling college student, works tirelessly at multiple part-time jobs to make ends meet. In a bid to earn some extra cash, he volunteers for a paid drug research study, unaware that it will alter the course of his life forever.The experiment takes a disastrous turn, leaving Ryo bedridden with a high fever for several days. But when he finally awakens, he finds himself in a world plunged into chaos. A deadly virus has ravaged the city, turning its inhabitants into ravenous, flesh-eating zombies. Streets once bustling with life now lay desolate, the remnants of civilization crumbling under the weight of the apocalypse.

…but it seems pretty doable.

Gu Nianzhi had no idea how to get the aloof and handsome Major General to fall in love with her.

His eyes were dark and serious. “…Seduce me. If you can do it, I’m yours.”

Gu Nianzhi: “!!!”

- Description from Novelupdates