I'm The Devil - Chapter 304 : Outer Creatures

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

After his girlfriend broke up with him, wandering all over the place, Xia Tian happens to see a girl about to be hit, after he saves her, he ends on the hospital. Now thanks to his accident Xia Tian awakened the ability to see through anything, be it weak points, or through clothing, nothing escapes his eye. Especially girls.

- Description from novelupdates

Xiao Ze, who was dedicated to the people and vowed to become a generation of Ming Jun, accidentally fell on a little lady.
The little lady was born beautiful and lovable.
So Xiao Ze accepted his life and got the name of fear.

ps:
①The male protagonist has no concubine, and he is dedicated to serving the country.

- Description from novelbuddy

** A Light Novel featuring a weak protagonist tasked with the impossible mission of saving a Virtual Reality world that has moved on without him. This post-apocalyptic sci-fi is brimming with drama, conspiracies, and action. **As the Santa María spaceship travels the galaxy in search of a new home for humanity, all passengers must remain in cryosleep and log into The Novus, a Virtual Reality MMORPG designed to train the younger generation in building a civilized society.Not only is this place a utopia, but it’s also a fresh start for seventeen-year-olds Alan and Astrid, who have just started dating.“Life in The Novus will be awesome with you by my side!”But an emergency pulls Alan out of the system—a catastrophe that endangers the lives of the Santa María's population and their mission.What will he find when he returns?Three years have passed. Astrid has become one of the strongest warriors, and Alan... is now the weakest User in the virtual world.