Yeah I accept, this is a Gender Bender CGDCT manga and I enjoyed it.
First of all, for my defense. As a millennial I grew up in the era of Cute girls doing cute things (CGDCT), not in generation of Cowboy Bebop, Trigun and Joe. So I enjoy this just like I would any other series, unlike the elitists I don't complain, I accept whatever I'm given.
So this is the story of a NEE- *ahem* "In-Home Security Guard" He was a useless member of the society so to fix that can you guess what his sister did? She drugged him and turned him into a
girl (yes, you read that right, physically he/she became a 100% girl)
So this is their daily life of turning the NEET into a normal human. The art is fine, story is enjoyable enough for a weekly or even a binge read, characters are like you'd expect (not that I have any problem with it) Our MC is developing towards becoming a normal member of society. If you let go of science for a bit then Enjoyment is plenty. So in the scenario of you having 3-4 hour of free time, I'd recommend to check this out.