3-gatsu no Lion Shouwa Ibun: Shakunetsu no Toki
3月のライオン昭和異聞 灼熱の時代
The story is set in the year Showa 44 (1969), and it centers around Takanori Jinguuji, the 27-year-old man who eventually become the head of the Japan Shogi Association in the main 3-gatsu no Lion series.