While Rinrin and Shuri are still sleeping at their camp, Kan'u wakes up and immediately finds herself in the middle of a battle between bandits and militias.  They decide to team up with Ryūbi's army to defeat the bandits; and with Rinrin fighting skills, Shuri's strategies and Kan'u strength they will help Ryūbi get back in the good graces of his lord.
On the third day it flowers. That’s why it’s called the Three-day plant.