In the MCU/Marvel with the Omnitrix/Ultimatrix - Chapter 55: Grandmother

Before death Qin Tailong left two magic tools to his son, Qin Dong. In his father’s last words, Qin Dong realized his father had been murdered by Lord Wanpeng, who coveted one of the family magic tools—mystic chaos ring. Bearing the hatred in mind, Qin Dong swore to revenge against his foe. He escaped to the mortal realm temporarily, continued to strengthen his cultivation base and studied the secret hidden in the seals of the ring. While reveling the secret, he found five ladies were the key to the release the seals. Their romantic relationship with Qin Dong was established the moment he was born.

- Description from Novelupdates

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

Captain America: “Commander! The roaring commando is in place!”
Iron Man: “You are my godfather?!”
Wolverine:……
Dark Night Legend, Avatar, Bliss Space, Transcendental Hacker…

Traveling through the world of science fiction movies, and quietly changing the real world
A dark mech slowly landed on the platform

“Boss, the press conference is about to begin.”

- Description from Uukanshu translation

Floods, torrential rains, extreme cold, heatwaves, hail, earthquakes, polar nights and polar days… Overnight, the world transformed immensely as numerous natural disasters swept across it.Gu Yan knew, who struggled alone in the post-apocalyptic world for ten years, finally met her end alongside her enemies.Upon opening her eyes again, Gu Yan knew with her space ability replanted herself back three months before the apocalypse.Her younger brother had not yet been washed away by a sudden flood, and her boyfriend had not been frozen to death by his cousin in extreme coldness.With her soon-to-be useless company, she tricked her cousin's family out of billions, and Gu Yan knew started her delightful stockpiling life.From pearl milk tea and instant noodles, hot pots and rice with big plate chicken,To things that fly and swim,Whether for eating, drinking, playing, or using,All that can be thought of and not, she arranged everything.Whether it could be of use or not, stockpiling was the key!