In MHA with a mutated sharingan

An eccentric girl with an itchy trigger finger gets reborn as the twin sister of Mei Hatsume. With her visual prowess, sharpshooting skills and sisters crazy firearms (that usually explode) she will become the strongest heroine, all the while unknowingly advertising her twins' technological masterpieces. This is my first fanfic so don't expect much. I've also got online classes so I can't upload more than 3 times a week.