Aka no Haikyo Manga熾紅廢墟; 赫の廃墟; The Crimson Ruins
From Aerandria Scans: I suddenly lost my parents. Without a single relative, I must return to my father's birthplace, a village, where I can finish school. But I still cannot recover from the sadness. I am lost in doubts and insecurity. And then, on a mountain road, among the lush greenery, who do I chance to meet..?