At the same time, Kurumada posted more hints about his new project, including some rough sketches, on his official blog.
His comment and the images clearly suggest that his new project will be a sequel, a reboot, or a spin-off of one of his early works, Fuma no Kojiro.
Following the very successful Ring ni Kakero (1977-1981/25 volumes), Fuma no Kojiro was serialized in Shueisha’s Weekly Shonen Jump from January 1982 to December 1983, then compiled in ten tankobon volumes.