Jin, an ingenious anthropomorphic squirrel inventor, calls Greenwood—a distant realm across the sea—his home. Fueled by the land’s relentless drought, he dedicates his intellect to crafting a visionary flying ship designed to summon rain and restore balance. His quest unites him with Shimajirō, a steadfast young ally, as they navigate challenges and confront opposition from adversaries like the obstructive Garbiz boss, determined to sabotage their mission.

A blend of technical mastery and unwavering resolve defines Jin, who channels his inventive prowess into combating environmental calamities. His alliance with Shimajirō underscores teamwork as their primary weapon against adversity, blending creativity with tenacity. While the narrative spotlights his role as a driven innovator and resilient leader pivotal to resolving Greenwood’s crisis, it remains silent on his past or personal ties beyond his devotion to his homeland.