Ikr
No. If you were talking about those BL doujinshi, it's not their works. It's just Mangago being Mangago. Grouping works only by same name. Kazuki is a very common name even for a penname. Also, doujinshi artist will definitely use a different pen name for their official works.
Bruh scratch this. Just saw her Twitter and the author indeed drew BL lol but definitely not what Mangago listed here. So I'm partially correct
Omg drop the authors twitter pleaseeeee
@kazuki_com_
Yk what I’m not surprised that he’s gay if you looked at the author’s other works