World Embryo/Tear Jerker


 * Youhei's death and then Riku finding out that his stepmother no longer remembers him. It leaves Riku in a Heroic BSOD.
 * Same with Yui's death, even though Takao was trying to save her, it was Riku's lies that led her to it.
 * Neene's death, as she called Riku "Liar"
 * , I honestly think the author loves breaking the boy.
 * Shizuru breaking down in tears when Riku returns and says he couldn't protect Neene
 * Julie's death for Takao
 * Karasawa Shirou's breakdown once he found out that no one remembered Sawako.