I Dream of Hushi - S1.E23

Rokusho meets Ainsley, a woman that lost her husband in a war, and they start to become friends. When Rokusho sleeps on Ainsely's tree, he remembers something about his past with Dr. Hushi. The tree reminds Ainsley about her husband. The tree is important to both of them so they both try to protect it. The Rubber Robo Gang think that there are rare medals buried by the tree so they get into a ro-battle and set the tree on fire. While, both Rokusho and Ainsley are saddened, Ainsley says that they don't need the tree anymore.