Mirai Sarutobi

is the child of Asuma Sarutobi and Kurenai Yūhi, the grandchild of Hiruzen Sarutobi and Biwako Sarutobi, and the next student of Shikamaru Nara.

Background
Not much is known about this child other than that Asuma refers to the baby as the king, the future of Konohagakure