Crossover Tanks, Spells, and Robot Masters (a Mega Man x Gurupan x Little Witch Academia AU)

At the turn of the 23rd century, long after an alien invasion wrought havoc on mankind, and a strange new island was created, Dr. Tsueno "Thomas" Hikari-Nishizumi creates Rock, a son to compliment his daughters, much to Shiho's disapproval. Little does anyone know, this robot, his his unorthodox sister, Miho, and their friends are about to change the course of history... (Mega Man x Girls und Panzer x Little Witch Academia fantasy AU)