Kakushigoto is a manga about manga, by an industry veteran. I expected a stronger focus on the father-daughter dynamic with gags coming second, but the story does put gags first, to the point that I found it rather exhausting when I read the volumes consecutively. The chapters meander à la slice-of-life stories - time passes, but most story arcs span <30 consecutive pages. The humor is fine, but relies heavily on dumb misunderstandings, which eventually get tiring. There's also an annoying editor character who messes everything up, and since this is a gag manga, he never gets his come-uppance, so he unfortunately simply remains annoying throughout.
Regarding the art style, I was impressed by the awesome and distinct character silhouettes & poses, but slightly let down by the rather flat faces which could only portray a limited spectrum of emotions.
The ending was decent, and does resolve some open questions (like the topic of the mother), but I wish it had been elaborated on more fully. Also, some topics from earlier on are never fully addressed: the romantic interests; the grandfather; the boxes; etc.
Finally, on the meta level, it's sobering to read someone looking back on his career as a mangaka, to learn in the final volumes that the story is coming to an end and he doesn't have any new manga work lined up (which is hardly surprising as the story ended during the Covid pandemic), and then to see no new mangas listed for him on MangaUpdates as of 2021-04. On the other hand, he did mention he wanted to use a pen name in his next work, so hopefully things worked out fine for him, after all.