The setting is 15th century Poland. It was a time when heretical ideas lead those to who possessed such a mindset to being burned at the stake for their beliefs. Rafal, a child prodigy, is expected to major in theology, the most important subject at the time, at the university. One day, however, he comes across a mysterious man, and is now studying a possible “truth” in the midst of heretical thought! **Awards:** – Won the 26th Tezuka Osamu Cultural Awards Manga Grand Prize (2022). – Won the 54th Seiun Award in the Comics Division (2023). – Won #1 in BookLive’s Readers’ Choice Top 100 Truely Interesting Manga 2025.