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 24,514 Aug-13-19
Chapter 55: Black Rock 27,248 Jul-31-19
Chapter 51: Stones 32,678 Jul-03-19
Chapter 49: Captain Conner 32,143 Jun-19-19
Chapter 42: Pino's Dream 37,996 Apr-24-19
Chapter 41: Fireworks 32,222 Apr-24-19
Chapter 40: Plan C7 35,293 Apr-17-19
Chapter 38: 22 Shots 35,465 Apr-03-19
Chapter 36: The Gia 36,573 Mar-26-19
Chapter 29: Iron Hill 49,532 Jan-30-19
Chapter 28: New Companions 40,511 Jan-23-19
Chapter 26: Two Sisters 28,044 Jan-10-19
Chapter 24: Sister Ivry 39,813 Dec-14-18
Chapter 23: Million Bullets 42,383 Dec-05-18
Chapter 21: Soul Blade 39,628 Nov-21-18
Chapter 20 43,472 Nov-14-18
Chapter 17: Collection 43,704 Oct-24-18
Chapter 16: Sister 36,324 Oct-24-18
Chapter 14: Rebirth 32,560 Oct-24-18
Chapter 13: Edens Zero 31,624 Oct-24-18
Chapter 11: Machina Maker 30,340 Oct-24-18
Chapter 9: Vs. Foot Brothers 28,385 Oct-24-18
Chapter 7: Iron Tears 30,268 Oct-24-18
Chapter 6: Thief 30,954 Oct-24-18
Chapter 4.1: Extra 1 31,467 Oct-24-18
Chapter 4: Nouma 32,970 Oct-24-18
Chapter 3: Adventures 36,431 Oct-24-18