yoshibari_aubade
Manga written and illustrated by ran (yamatoagu).
It has a sequel novel called "夜縛エクストラ" or "Yoshibari Extra" that is published on the author's fan sites, which features adult elements since it's no longer restricted by the limitations of a general magazine.
It also has a official doujin called "縛敗♦終曲～シバリマケ・フィナーレ～ from「夜縛」", It is a bad-end defeat doujinshi drawn by the author himself where the focus is not on sex, but on Ryona (18+).
h4. Official Art
* !post #4978687: Volume 1 Manga Cover
* !post #5087394: Volume 9 Manga Cover
* !post #5367320: Official Doujinshi Cover
Aliases: none