Aah, this was cute!
SPOILERS
First and foremost, I love the characters. Mei and Gabu are very charming in two different ways. Gabu is charismatic and sweet, and Mei is timid and maybe a little grumpy. I love them both so much (and their designs are gorgeous!)
I'm really hoping we'll get to uncover more of Mei's story in the later chapters. I'm quite curious about their family, their previous job, and of... well, of who killed Marron. I can completely understand why Mei doesn't trust easily because of that.
I'm really looking forward to the next chapters. There's so many things I want to ask about the characters and their world, but I'm going to have to wait and see if the subsequent chapters answer those questions first.
You did an excellent job with chapter 1! Keep up the good work ^-^