Next Day.....
Subaru stood back, examining the room carefully. In preparation for Hori's coming, he'd finally steeled himself for a trip into the familiar bedroom, and had got to work clearing away certain items, and tidying away most of the evidence that his sister had ever lived here. It saddened him, but on some level he knew that this would actually do him good, perhaps clearing the cloud of misery that had followed him since his beloved twin's death.
Moving to the lounge, Subaru looked at his stash, wondering where he could put it. If he left it here, it was 10 to 1 that Hori found it. So where......ah! Rolling his eyes at his own stupidity, Subaru picked up the bag of powder and the straws, carrying them into his own room and shutting them in a cupboard. As a guest, Hori would never enter his own bedroom - that would be intruding.
"Perfect." He murmured, before glancing at his watch and smiling slightly. There was even time for another dose.....