Thus Spoke Kishibe Rohan - Episode 6: Poaching Seashore

Kishibe Rohan wa Ugokana is a One-Shot manga written and illustrated by Hirohiko Araki as part of the Thus Spoke Rohan Kishibe Series. The One-Shot is also a Jojo`s Bizarre adventure spin-off starring Rohan Kishibe,a key character of Part IV: Diamond is Unbreakable, as the main protagonist.

Summary
The story is, reportedly, about Rohan being tasked with retrieving unique ingredients from the sea near Morioh for a cook in town, possibly Tonio.