Gate: The Realm of Althema

Set in an alternate world of Earth called, "Astraea", where the large landscape of peaceful countries, nearly endless paths of the seas, advanced technology taken the world into great success and power, and threats beyond understanding come into play to threaten even the countries and militaries, a magical gate, appearing within the UCA(United Commonwealth of Altair) state's major city, bridging the world between modern and medieval at a larger scale. Hordes of knights, wyverns, and more released their corrupted bloodlust, slashing into UCA civilians before they were met with the might of the UCA's military force and National Vanguards. Among them was Kaelen, a Loki Special Forces solider who so happened to get caught up in the mess to visit his family, aided the people against the strange knights using his superhuman capability. However, Kaelen's work and witness to such reveal was not finish for he, and his parents, Aelyra and Marcus, were confronted by the government. Secrets had been kept for years and it was the moment that it had to be told. Kaelen's mother, Aelyra Elric, is not from Astraea, but a well known and praised Princess of the other world's most powerful kingdom, the Valykarthian Dynasty. Aided by the government's organization and Marcus, Aelyra was given a chance to make a different life entirely, but would not realize that her world would come to chase her for the first time. Knowing this with the uncertain safety of Althema's kingdoms and lands, Aelyra must convince her family, alongside Kaelen after years of her instant vanish, to make peace with the UCA.