The Shrike's Sacrifice

The wealthy but declining Akashiro family is targeted by a conspiracy led by their own butler, Kiriyama, who seeks to seize their assets. Desperate to save her bankrupt father and the home her beloved brother-figure Yushiro will return to, the frail Nanako enters a sinister agreement to submit herself to strangers for five days. However, she soon discovers a terrifying truth: a malevolent side of her own psyche has been orchestrating the family's ruin and Yushiro's exile out of obsessive jealousy, leading to a devastating spiral of betrayal and trauma.