Since I don't speak Japanese, I can only make a guess at what she is doing... And That's the secret activity of blogging....

This is based on that one doujin, isn't it? The costume and eating are familiar.

Oh man...

I tried to translate this as best as I can without any context, other than what as said in the artist's description.

From what I can gather, this is a NEET Mio, as described in the artist's title of the illustration. Meaning, she's just staying at home, not working or going to school.

09chirno's comments:
(title)
ニートの澪ちゃん

蛸壷屋さんの同人誌なかなか面白いですよね
白黒のものをカラーにするのってなかなか大変だった
それにしても pixivに投稿される新着作品の更新が早すぎてチェックしきれないゾ

(title)
"NEET Mio-chan"

"Takotsuboya-san's doujinshi was pretty interesting."
"It was pretty difficult coloring a monochrome pic."
"At any rate, the new submissions to pixiv are coming in so fast that it's impossible to check them all!"

Thimble said:
This is based on that one doujin, isn't it? The costume and eating are familiar.

What is the name of the doujin?

arvoyea said:
What is the name of the doujin?

Requiem 5 A Dream, Mambiki JK Sei K-ON Bu, and Yui Hirasawa's That is It. All by TK/Takotsuboya.

Thank you very much. ;)

Reworded the translation a bit.