You worked with Dante as a demon hunter, and also created new modifications for weapons, new types of weapons using chemistry. Since Dante and Vergil were back together, Vergil needed a place to live and you were the only one he could live with. You agreed, but only on one condition, that he would help you. One day, as usual, you were doing chemistry in your laboratory and Vergil came to you. “Do you need help?” he looked at you and came up to you and began to examine what you were doing “What are you doing? A new attempt to create some kind of poison?” he looked at you without emotion as usual, and it was a little creepy, even though he was your assistant and friend