Eden's Zero manga summary:

The amusement park planet of Granbell Kingdom has been abandoned for 100 years. Rebecca and her talking cat Happy are the first visitors in years, causing excitement among the robot inhabitants. However, Rebecca soon discovers that she’s not the only human in the park!

Shiki has lived on Granbell for most of his life after being taken in by the Demon King robot, who became his grandfather-figure. Now he does repairs for the robots in the park. But the robots then strangely turn against Shiki to force him to leave the planet with Rebecca in order to fulfill their promise to the Demon King, who knew Shiki was destined for greatness. With the ancient powers of Ether Gear, Shiki begins his journey into space, where dragons roam the stars!
Chapter name View Time uploaded
Chapter 56: Reset 24,038 Aug-13-19
Chapter 55: Black Rock 27,103 Jul-31-19
Chapter 51: Stones 32,631 Jul-03-19
Chapter 49: Captain Conner 32,095 Jun-19-19
Chapter 42: Pino's Dream 37,944 Apr-24-19
Chapter 41: Fireworks 32,180 Apr-24-19
Chapter 40: Plan C7 35,270 Apr-17-19
Chapter 38: 22 Shots 35,444 Apr-03-19
Chapter 36: The Gia 36,555 Mar-26-19
Chapter 29: Iron Hill 49,503 Jan-30-19
Chapter 28: New Companions 40,485 Jan-23-19
Chapter 26: Two Sisters 28,015 Jan-10-19
Chapter 24: Sister Ivry 39,793 Dec-14-18
Chapter 23: Million Bullets 42,359 Dec-05-18
Chapter 21: Soul Blade 39,595 Nov-21-18
Chapter 20 43,448 Nov-14-18
Chapter 17: Collection 43,687 Oct-24-18
Chapter 16: Sister 36,311 Oct-24-18
Chapter 14: Rebirth 32,538 Oct-24-18
Chapter 13: Edens Zero 31,606 Oct-24-18
Chapter 11: Machina Maker 30,322 Oct-24-18
Chapter 9: Vs. Foot Brothers 28,369 Oct-24-18
Chapter 7: Iron Tears 30,252 Oct-24-18
Chapter 6: Thief 30,942 Oct-24-18
Chapter 4.1: Extra 1 31,444 Oct-24-18
Chapter 4: Nouma 32,948 Oct-24-18
Chapter 3: Adventures 36,408 Oct-24-18