Her contributions to the Kyushu campaign were so significant that they completely changed the course of history and she was highly praised by Japan's most powerful man at the time, Toyotomi Hideyoshi.

But Myōrin decided to resist against Shimazu, she strengthened small Tsurusaki castle digging the moats, placing the fences and boards as wall.

As the narrow path at the south of the castle is an expected approach route, a combination of wall and pits was added to stop the enemy.

Myorin appeared on the walls dressed in full armour and carrying a naginata, she was accompanied by small number of soldiers, farmers and maids.

Negotiations were set in motion and Myorin was offered substantial reward in gold and silver if she would surrender the castle, but she made it clear that she was prepared to defend it to the death.

The traps caused the Shimazu army to retreat several times, she commanded a Teppo (firearm) unit on the front line.

The defense of Tsurusaki under her was kept up with vigor, the garrison losing only one man during the main assault and taking 63 heads of the Satsuma attackers.

Myorin organized another party after learning of the invasion of Hideyoshi, she planned to lower the enemy's morale by handing out sake bottles, leaving the commanders and the troops drunk and unsettled.

Myorin launched another surprise attack around the Otozu River, defeating Shigemasa Shirahama and Hisabu, two high ranking generals.

In the next day after Myorin's victory at the Terajihama, she took over 60 heads of Shimazu's men forwarded to Otomo Sorin in Usuki castle, who was very encouraged thereby.