If you're looking for manga similar to Kenkoku no Jungfrau (Light Novel), you might like these titles.
Ten years after a cataclysm destroyed the planet, magic prodigy Lag Logline is entrusted with the title of "sage" and the task of preventing the world's destruction one thousand years from now. However when he awakens from his time freezing spell the world he finds is nothing like he remembers. Upon meeting a swordswoman named Clau, Lag finds out that this world one thousand years in the future doesn't know what magic is. After having his own magic mistaken for swordsmanship, Lag enrolls in the Imperial Sword Academy in order to unravel the mysteries of the world around him and fulfill his promise to save humanity.
Junpei Ichinose, a student at a magic school in Tokyo, is a dropout who has never discovered his magic aptitude. Suddenly, the beautiful witch Meryl appears before him and tells him, "I need your power, the reincarnation of the Demon King". Junpei finds out that he has the power of the Demon King. He learns that he has the power of the Demon King, and his secret is revealed to Sonia, a beautiful girl who is a descendant of a brave warrior. Junpei, who has no intention of becoming a Demon King, persuades Sonia to teach him how to use his power properly. However, the Demon King's power is the strongest and worst "erotic magic"!
Once before, Seven mythical Gods appeared on Earth.Their battle split the earth and tore the sky. 10 years after the battle, the calamity should have been long gone already. However. A boy named Shinsen Raika had his true little sister abducted by a god in the battle and was currently standing in the『Academy』on an artificial island in the distant seas. Here, the night was called as after school time. During that time period, the 『Gods’ Proxy War』 were being held by using Divinity-Compatible people for gaining the seat of the law of world (The supreme God).
Morioka Yuuto was an ordinary highschooler who was chosen as a candidate for the next Demon Lord. Thus, he was transferred to a Demon’s school, Ginsei Academy where he faced contempt from the other students. “—I’ll make you into the Demon Lord. So…… take me.” Through an encounter with the Demon beauty, Himekami Rizel, Yuuto’s life changed, along with the world. In addition to being able to learn any magic at one glance, he can also infinitely absorb the mana of his harem by maintaining skin contact. This was the special ability which can only be held the human Yuuto. The human Demon Lord candidate aims to become a just Demon Lord and stand against the strongest Demons!