just a nice side effect of being a caretaker of a very dense baby! in an older chapter, minami tries to pick up Gospel and struggles, and hands him over to chiaru when she realises how effortlessly she's holding him.
As far as I know, he just draws himself as a blue skinned big breasted demon woman, because why not. In the volume 7 afterword, he says "a man's got to have guts" so that all I can base it off.
I hated Crown for the longest time, but working on this for so long I guess I've Stockholm'd myself into thinking he's not entirely wrong...... but he's still gotta pay for his transgressions against Gospel.