Having decided to leave Hinoshima, Tonbo boards a ferry with Igarashi, bound for Kagoshima. On the ship, the two reflect on their time living on the island. Through playing golf with "Igaiga", Tonbo's world begins to broaden. As she starts to look toward the future, the warm presence of the island's residents, who have been watching over her, stays by her side.

Igarashi sends Tonbo, now a high schooler, to stay at a golf practice range in Kumamoto run by a friend who trains junior players. When Tonbo tries a driver shot for the first time, the other students are puzzled by her skill. She soon gets a chance to practice at a nearby course, where she meets Hinoki Otowa, a talented junior golfer known for her performance at the Kyushu Junior Championship.

Tonbo and Hinoki hit the golf course for practice. As Tonbo unleashes bold, carefree shots, Hinoki’s view of her begins to change. Despite the strong winds, they exchange impressive plays. Meanwhile, Igarashi arrives with a special gift for Tonbo, who's just started her new life in Kumamoto.

After witnessing Tonbo's golfing style up close, Coach Hajime is determined to unlock her potential by entering her in the Kyushu Women's Championship. However, she must meet the eligibility criteria first. As Tonbo starts her new high school life, things get hectic as she learns to juggle school, going to the practice range, and practicing on the golf course to secure her spot in the tournament.

Though on the first day of the Kyushu Women’s Championship there were many players around Tonbo's age, she ended up paired with a housewife golfer named “Shima-san.” Her skills being just barely above the cutoff line irritates some fellow competitors. However, as the championship progresses, Shima-san’s unique approach to golf begins to influence her fellow competitors playing style!

Tonbo joins her first tournament, playing with a bold, freewheeling golf style that puts her in the lead on day one. On the second day, she's paired with the other top players from the first round: Hinoki, Tsubura, and Ema, who placed second. With Ema fighting for a comeback after a rough past, their group’s round ignites from the very first hole!

On day two of the tournament, Tonbo, Hinoki, Tsubura, and Ema are paired up. Hinoki faces pressure from her father, Tsubura plays in her usual style, and Ema makes her comeback. Amidst this heated battle, Tonbo, as always, sticks to her carefree style. Then, driven by her father’s relentless push to be "number one," Hinoki makes a surprising move...

The night before the tournament’s final day, Igarashi arrives in Kumamoto. Noticing a change in Tonbo, he offers advice to draw out her strengths.On the last day, Tonbo, with her trainee caddie Nishida, faces challenging, windy conditions. Skillfully using the wind to her advantage, she climbs the leaderboard, making Hinoki, Tsubura, and Ema recognize her as a serious rival for the title.

On the final day of the tournament, Tonbo plays in her free-spirited style while Hinoki, Tsubura, and Emma close in, their competitive edges starting to show. Hinoki leads at the halfway point, but looks glum despite that. In the second half, Hinoki’s shot hits a tree branch, leading to an unexpected setback…

On the final day of the tournament, Hinoki turns a penalty into a mental reset. Tsubura stays steady with strategic play, while Emma takes a risky shot despite her injured leg. Meanwhile, Tonbo begins to feel the weight of competition, spurring a change in her resolve.

With three holes left on the final day, Tonbo makes a charge, closing in on the leader. Meanwhile, Tsubura and Emma struggle to improve their scores, while Hinoki regains composure to recover. Suddenly, all four are tied, setting the stage for a dramatic finish. On the final hole, Tonbo's tee shot takes an unexpected turn, changing everything.

Emma pushes through the pain of her injured leg for the sake of her swing, Hinoki battles her inner limits, and Tsubura stays true to her own style. Watching from the sidelines, Tonbo cheers them on. An intense showdown over a single final stroke builds to a thrilling, unexpected finish.

After competing in the Kyushu Women’s Championship, Tonbo travels to Hinoshima with Igarashi to report the results. Together, they reflect on their new challenges in Kumamoto. Along the way, they recall the people who supported Tonbo and the rivals she faced in her first tournament, each with their own aspirations. Tonbo's journey through golf continues to soar—unstoppable and full of promise.