MARS (Series) favorite_border

[DeepL Translation - needs review] Volume 1: There is only one person in the world, and that person is somewhere. Kira, a girl who has been isolated from her surroundings, and Rei Kashino, who lives momentarily. The souls drawn together by the god of battle (MARS) meet, turn the darkness of loneliness red, and now begin to run. ......

(Translator: DeepL)