The story centers around Yotarou who is a mature prisoner just released on satisfactory behavior during Shouwa Genroku era in Japan. His name means dim-witted or anti-hero. Upon returning to society, he begins his new life by comic storytelling (rakugo). Impressed by Yakumo’s character as the “grim reaper”, he requests master to take him as an student. Most of the season is about dwelling into Yakumo’s past during World War II and years subsequently.