Japanese Name: 六姫は神護衛に恋をする ~最強の守護騎士、転生して魔法学園に行く~ Raw Link: https://ncode.syosetu.com/n2330fy/ Link to Scanlator(for manga adaptation): https://lhtranslation.net/manga-six-princesses-fall-in-love-with-god-guardian-manga.html Cover art: Description: Seven empires have been in conflict for a long time. Distressed about the wars, Arsmeria, the empress of the heavenly empire, deployed an [Armistice Barrier] at the borders of the seven empires. This, however, cost her her lifespan ... A thousand years later, Lloyd, a child adopted by a Count's family, is living happily with Myuria, his young and loving mother, and Kanon, his lovely younger sister. Lloyd is the reincarnation of Vance, Arsmeria's escort knight. To search of his liege in this new world, and to protect her to the bitter end, Lloyd, along with Kanon, takes the entrance exam of the World Magic Academy. There, he meets a beautiful princess from each of the seven empires. Will he find his liege?! Why It Should Get Picked Up: Well, it's cute. Also the twist seems to be that the princess he made a promise with 1000 years ago has reincarnated into six(or maybe seven) princesses today. That's an original way to justify a harem.
I read the manga and looked up the series but couldn't find anything about the novel, is it still ongoing?