I tried to kill a computer mouse

A shadow guard from another world who was reincarnated into the modern world. What will happen to her after seeing all those things that she never even imagined in her past life? The one time when she was exploring the room she was in, she saw an unusual mouse-shaped object which seems to glow. The computer mouse seemed like a threat to her, she rushes to kill it but as soon as she came in touch all the memory of the previous owner gushes into her head.