【a place to hide your head and not hide your asshole】don’t cover your head and leave your bottom exposed

This is the story of a young girl who becomes aware of her sexuality and begins to masturbate outdoors.
This is a short manga about a man who uses his fingers to finger Kagero’s anus.

This is a doujinshi published in September 2015.

17 pages of the main story + 4 pages of extra manga + cover + diff without cover background