Profession Series (25) Prince of Sushi by Popono Workshop

Takeshi Nakamura is a sushi master. He lives with his grandson, Haruto before he goes missing. Ten years later, Haruto meets his grandfather's apprentice, master Eiichiro. His life changes drastically from then on. In order to find the whereabouts of his grandfather, Haruto bravely takes up the challenge that Hiroki, the owner of the Izu Sushi chain has made to him. Who will win the battle in the end? What exactly happened to Takeshi back then?