This work is part of a quartet of works, though the first three can be considered in isolation due the the fourth switching to a new 'protagonist'. The fourth shall be translated by me in due time and added to the following chronological reading-list:
1.http://e-hentai.fbk.tokyo/index/g/2620066/3ca94f1b03/
2.http://e-hentai.fbk.tokyo/index/g/2620067/e617c23b01/
3.http://e-hentai.fbk.tokyo/index/g/2620068/ff61b1af54/
4.