Alpha's Bite Between My Legs - Chapter 19: The Gossip for Rose

One day I got a younger sister.Only I know her true identity.

With the Legendary Mechanic System, I transmigrated to Marvel Universe to be Dr. Zola’s assistant.

With Mechanical Force Analysis, I can learn every black technology.

Winter Soldier’s arm? I built a better one for you.

Iron Man’s armor? I already made it a decade earlier.

Doc Ock’s tentacles? I am the one who provided core technology.

Hulk’s mutation? Sorry, I was there and got hit by the radiation too.

As for a certain purple potato, can he collect all Infinity Stones?

……

However, I only had one simple ultimate dream. That is to go home…

- Description from Novelupdates

Arlan can go back in time by one minute, once per day.And every time he levels up, he can go back a little further.But, even with his growing power, Arlan has never been in more danger. Demon magic was never supposed to make its way into the hands of humans, and its original owners would go to any lengths to take it back.What to Expect:-Numbers. This is a LitRPG written by someone who loves LitRPGs. It won’t be overwhelming or confusing, but if you dislike the genre, this probably isn’t the story for you. Blue boxes ahead!-Meaningful progression. Characters are always working to grow more powerful, but doing so is difficult. Level-ups are hard-earned and bring with them meaningful change in characters’ abilities.-Tactical combat. Fighting is as much a battle of wits as it is a battle of muscle, after all.-No harems.

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!