Brother Urged Me Home; Danmaku Said I'd Become a Murderer

While I was at work, my brother sent me a message. "Sis, something came up and I have to head out. Come home and look after Mom." I was about to ask for time off when a line of text appeared before my eyes. Don't go home. Your mom's condition has gotten worse and she wants out, so she and your brother have schemed to frame you! He'll inject her with a drug before you get home, then leave just you and your mom alone in the house.