I Became the Must-Have Character of the Academy City - Chapter 15: Positive Cliché

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

After an unfortunate encounter with Truck-kun, Kieran Darkmoon suddenly found himself transported to a world full of women, where men are as rare as a unicorn and the cultivation game is anything but straightforward!With a lewd system that rewards him for getting frisky, Kieran quickly learns that pleasure is the path to power! From racy encounters with sect elders to sneaky adventures in the weapon pavilion, every sexy escapade earns him points—and who doesn’t love a good point system? As he navigates his way through a harem of powerful women, bizarre quests, and comically awkward situations, Kieran is determined to rise above his circumstances (and maybe get some snacks along the way).Join Kieran as he juggles dual cultivation techniques, earns outrageous bonuses, and uncovers hidden treasures—all while trying to stay out of trouble (and in others pants!). With epic battles, outrageous rewards, and enough steamy moments to keep you blushing, “Lewd System in a Cultivation World Filled with Women” is a hilariously naughty adventure you won’t want to miss! Buckle up for a journey where every encounter is a chance to level up in more ways than one!

Vincent Strider was a gun for hire who made a living by killing whoever it was his clients wanted dead. But during one mission, he died in a fierce gunfight. However, death was not the end for him. Vincent found himself reincarnated in another world, facing a floating interface that flickered before his eyes.[Synchronizing Host!][Military System initializing.]Vincent found out that in this system he received, he can summon soldiers, tanks, aircrafts, and even warships! This is going to be exhilarating.