If you're looking for anime similar to The Story of LKY, you might like these titles.
Inspired by the aesthetics of design and the freedom of flying, Jiro Horikoshi pursues a life dedicated to the creation of a beautiful aircraft. He labors from his childhood, filled with dreams of engineering, to adulthood as he creates an elegant, flightworthy plane—the Mitsubishi A6M Zero—that eventually is used for something quite different than he expected: war.
Momotaro, the human leader of an animal navy fleet, has given his animal vassals a mission to bomb Pearl Harbor (also referred to as Demon Island). The Canine, Monkey, & Pheasant units all volunteered to accomplish the mission in the honor of their own country.
Two middle school girls, Mii and Yuko, are visiting Hiroshima when they are transported back in time to World War II. The schoolgirls not only see efforts of Junod in Hiroshima firsthand, but also his efforts to improve the conditions of prisoners of war.