Out of curiosity, I checked out 45’s page in the official artbook and, yes, Infukun/ZAGALA not only designed a great deal of Girls’ Frontline characters but also was the one who designed UMP45. I think he also created her personality as well, then left it up to the others to write her into the story. For all intents and purposes, he was the one who originally created her. Of course, 45 and the franchise as a whole have changed a lot since GFL(1) was first released in China years ago. I don’t think Infukun is even involved with GFL anymore. But it’s nice to find out where she was first created. And the fact he was also huge Kancolle fan is great to know. I also always loved Kancolle and the anime and movie are some of my favorite pieces of anime, even though everyone found them both pretty mediocre. Also, in 45’s page, Infukun wrote the following:
>The UMP 45 was a somewhat more plebeian (in the historical sense) SMG from HK, and at first I designed her from that point of view; a weapon that the military might not want, but which intelligence agents or police might be inclined to use. I didn't consider incorporating other real-world positions into it as well, so her clothes are fairly normal, the kind you could buy anywhere.
The .45 ACP round's power is not to be underestimated, and her combat ability is quite exceptional. However, that's why I wanted to portray a feeling of "being special among the ordinary." Her clothes, her armband, and the scar on her eye were meant to make her seem like a character with a story to tell, though I don't know if I managed to convey that.
And, yes, he’s perfectly describing the woman I fell in love with years ago. Thanks for introducing me to my wife, Infukun. And thank you, Wo-class bro for pushing me down this very interesting rabbit hole. Today was a good day