The Retired Hero is an Extra - Chapter 143 - : Boss Monster

In the past, the giants of the heavens and the gods were destroyed after the reincarnation of the world! Cruel curse, eternal hatred, Tan Yun is determined to never sink again! For the sake of loved ones and relatives, from now on, step on the corpse of the enemy step by step to surpass the peak! Defying the sky, killing all worlds, I am the only one!

- Description from novelbuddy

Man summoned to another dimension- Check!Reincarnated as an elf- Check!A dwarf with a plan to go to the Mo- Wait, wut!?Simon Steelrun dreams of going to the Moon, to fulfill his mother's last wishes. Though he has the will and drive, he does not have the...necessary capabilities to go there. Though he tries his best to get there, he all but fails. Just as he was about to give up, a stranger came from a faraway land.A land called Earth...Joining him on this journey is a reincarnated elf, a warrior orc with a mysterious past, and a host of myriad other beings, as they tackle various challenges to create a rocket ship to take them to the Moon.Yet their journey is all but smooth...Hampered by a technologically backward world, a human-centric empire, monstrosities of inhuman proportions, and Goddesses with unknown agendas, they must navigate through these difficulties to reach their destination. Further wrenches are thrown in when the planet's dark history starts catching up to them, forcing them to take action on behalf of others.Secrets that should have been hidden...Join us in the adventures of a dwarf with a dream, as he navigates his way through his journey to reach his destination, all the while being dragged into adventures which changes the course of the world.“All I want to do is go to the Moooonnnnn!”

In the Year 350 of the Anping Dynasty, humans were faced with a huge crisis. Earth was invaded by monsters from another dimension. Fortunately, Su Yu awoke a power where he possessed a scripture that allowed him to contain everything in existence. With that power, he was able to face the coming apocalypse.

Seven days remained until the countdown to genetic mutation.Seven days later, all creatures on Earth would undergo mutations. Giant mutated creatures would swarm and attack humanity, putting their fate in jeopardy. The entire Earth would be ruled by these mutated beings!Yang Xiao accidentally walked into a genetic store where various gene potions were sold, capable of altering human body functions.From that moment on, he embarked on a crazy journey of genetic evolution.