Neurolink System in the Modern World - Chapter 543: The Devil’s Choice.

“Ruan Ruan, don’t think about leaving me.”The cold lips landed on the corner of her eye, and Su Ruan finally realized she had truly been reborn...In her previous life, she believed the scumbag man and cheap woman, and was ultimately pushed to the Insect Race, dying a miserable death. However, the man she always despised remained devoted, loving her broken body even after her death.In this life:“Ruan Ruan, is someone harming you? Then I'll kill them all.”“Ruan Ruan, you can only be mine.”“Ruan Ruan, I beg you, don’t leave me...”The Federation Empire's highest Commander, Lu Shinian, does everything possible to keep her by his side.Having thought that after being reborn, this Commander addicted to paranoia would only offer a cold hand to hold. Who could tell her that the “big dog” with fluffy wolf ears whimpering by her side every night is really Lu Shinian, the highest interstellar Commander?“Ruan Ruan, I want a kiss.”“Ruan Ruan, hug me.”“Ruan Ruan, why are you ignoring me again, boo hoo.”In the interstellar era, strength is revered, and the 3S Lu Shinian is a strongman among strongmen.But he is ironically shackled by an atavistic phenomenon that uncontrollably appears every so often. Wolf ears that suddenly spring up, an extra tail, all do not match Commander Lu’s image.From then on, to maintain his cold and towering image, Su Ruan covers Commander Lu's little ears, continuously working hard!Star Network spread that Su Ruan publicly jilted Lu Shinian, embarrassing him, and she would surely be hated and despised by him.But later, at a certain graduation ceremony, someone saw the always abstinent and aloof Commander Lu pin Su Ruan against the wall, corners of his eyes red, his voice aggrieved, “Ruan Ruan, kiss me.”

On an ordinary day, Lucius stumbled upon a strange, run-down shop. At first, he assumed it was abandoned—until he stepped inside.[You have entered the Universal Alchemy Store.][Congratulations! You are now the store’s owner.][Please craft your first potion.]Lucius blinked. 'What kind of joke is this?' But as if guided by an unseen force, he followed the instructions. Minutes later, his first creation was complete.[Love Potion: The drinker will fall in love with the first person they lay eyes on.]Lucius swallowed hard. 'Wait… does this actually work?'Before he could process it, the shop’s door swung open.Standing in the entrance was no ordinary customer—she was an elf. Long, pointed ears, mesmerizing green eyes, and a body sculpted by the gods. A visitor from another world.A dangerous thought crept into his mind.'Should I test it on her?'

Du Fei was reborn, and in this difficult era of extreme shortage of supplies, he started his wonderful life of opening and hanging…

- Description from novelbuddy

The MC entered the body of the An family eldest son, An Ziran, an arrogant 16 years old boy who weighed 78 kg (~171-172 lbs), who only knew how to eat, play and sleep. Seeing his current body, An Ziran decided his first priority was to LOSE WEIGHT!