Damn~ that was indeed what you can truly call a tragedy! Chapter 1 and already so red~ Righteous suicidal man failed to passed on, became a servant of a great evil unwillingly. High school girl failed to assess the situation properly due to high school boy failing to control his hormones. After having sex with him, she realized she loved him but, alas, she became a slut seeking for love that never will happen again, completely erased with the boy she loved and cursed. Demonic goddess sexually excited in a game of malevolence; who will unbind first after a mountain of curses are piled up? She or her unwilling servant. This is like Hell Girl except sexual and more tragic than ever!
After seeing his other works through your link. I can finally confirm, I knew it! I definitely recall his art before in some doujins!