The Palaces of the Twelve Sacred Beasts - Chapter 70.5

In the era of universal mechas, people can go to the endless abyss, collect materials, strengthen and forge their own mechas, and master the power of destroying the world.

Jiang Chen traveled through time and awakened his talent [Immortal Unarmed]. Once the mecha is broken, he can permanently absorb its power and receive multiple bonuses.

…

At the bottom of the abyss, when the Old Demon God finally broke the Titan mecha with great effort, a hand stretched out from the fragments and held down its head.

“Congratulations, you have unlocked my limiter.”

- Description from novelbuddy

I was left paralyzed with only a month to live, but that “9-inch” part of me was still hard as a rock. Even the sickly beautiful schoolgirl couldn't resist my “pecker,” and to fulfill my dying wish, my sister even dressed up as a lady in black stockings to teach me how to “drill.” What's more outrageous, the hospital nurses wanted to make a little movie with me, lining up with the head nurse at the front...Just after coming out of the emergency room, I saw the system panel:Name: Ethan JonesGender: MaleLength: 9 inchesSkill: Hard as a Rock LV1Note: Peak human hardnessDying Wish: To caress auntie's sheer black stockingsTask Reward Points: 1000 pointsDespite my strength and stamina attributes being only at 1, and my agility at 0, only my “pecker” could lift the heavy blanket while doing squats. My face was full of question marks—what kind of bug is this system? Just because I like looking at auntie's legs, did it give me such a special skill?Now, I have no choice. I must complete tasks to earn points and add attribute points.However, the story actually begins 12 hours earlier...

A normal guy gets hit by a truck and isekai'd. Why? Because trucks are apparently some cosmic loophole. He decides to be a dungeon, because it sounds weird and interesting to be one. Is it? Let's find out.