The 2nd season of the anime “ Our Last Crusade or the Rise of a New World” (Kimi to Boku no Saigo no Senjō, Arui wa Sekai ga ) had its opening and ending theme revealed.
Check it out:

Therefore, it has the opening "Senaka Awase" by singer AliA and the ending theme "Para Bellum" by Sizuk. The animation premieres this year, directed by Yuki Inaba (KamiKatsu), through the studio Palette and SILVER LINK.
Synopsis:
There has been a great war for years between the scientifically advanced Empire and Nebulis, the kingdom of magical girls—until the youngest knight, who is to be crowned the strongest in the Empire, meets the princess of the rival nation. They are sworn enemies… yet the knight is drawn to her beauty and honor, while the princess is moved by his strength and way of life. Will their struggle ever end?
Finally, Kadokawa began publishing the print version of the Our Last Crusade light novel in May 2017. Meanwhile, Okama launched a manga adaptation in Hakusensha's Young Animal magazine in May 2018.
Source: Official Website