3-gatsu no Lion Shouwa Ibun: Shakunetsu no Toki  

Sangatsu no Lion Shouwa Ibun: Shakunetsu no Jidai, 3-gatsu no Lion Spin-off: The Scorching Times, 3月のライオン昭和異聞 灼熱の時代

In 1969, during the Showa era, the narrative focuses on Takanori Jinguuji, a 27-year-old individual who later assumes leadership of the Japan Shogi Association in the central plot of the 3-gatsu no Lion series.