Sakuramiya Shimai no Netorare Kiroku

Synopsis

Sakuramiya Saya and Hinata are sisters who are both members of the archery club and also in a romantic relationship. They became sisters after their parents remarried, and later developed a romantic bond. Tachikawa, a member of the photography club, discovered their secret and began blackmailing them. He first targets the younger sister, Hinata, forcing her into sexual acts while recording a video of him breaking her hymen. Concerned for Hinata, Saya goes to the clubroom to look for her, only to be lured in as well. Both sisters end up being sexually assaulted and ejaculated on. Thus begins their daily ordeal of being manipulated and sexually abused by Tachikawa. As his demands grow, they eventually suffer assault not only from Tachikawa but from multiple others.