Series: Yukkuri Patche (hassu)

Part 1: https://www.pixiv.net/en/artworks/64951958
Part 2: https://www.pixiv.net/en/artworks/65057707
Part 3: https://www.pixiv.net/en/artworks/65127420
Part 4: https://www.pixiv.net/en/artworks/65286506