Kasumi (Castle Dusk)

Princess Kasumi, or Princess Dusk as she is referred to earlier on, is a fictional character created especially for Naruto: Ultimate Ninja Heroes 2 Phantom Fortress video game for the PSP. She has the appearance of a priestess with long black hair, a white kimono and a white mask with a red snake on the right side of her mask. The hair ornament is a gift to her from Jiraiya with bellflowers representing "Gratitude", which the player can discover when playing Jiraiya's side of the story.

After the Mugenjo Castle is summoned in Konoha late one night and Naruto goes on to investigate, Princess Dusk appears to him, Sakura, Shikamaru and Hinata after freeing Kiba from her control. She complains about Kiba's abilities and then turns her gaze to Naruto. She leaves saying that she will "never forgive them", even though she doesn't say what they did. After they find the first summoning tag used to summon the castle and peel it off, Naruto and the others see a vision of a girl named Princess Kasumi giving one of her guards and maid-in-waiting a lucky charm for everything they did for her. Inside was a note which showed that she cared more about them than she did herself. When Princess Dusk detects this, she creates more illusions to stop Naruto and his friends from progressing any farther in the fortress. Later on, they find a Choji illusion that she creates alongside an Ino illusion but they are defeated when the real Ino and Choji arrive.

When Naruto and his friends reached the second seal and peeled it off, they saw another vision of Princess Kasumi giving a ribbon from when she was a child to a young girl. After that, Princess Dusk appears again saying that peeling off the seals only ensures the village's doom. Every time a seal is peeled off, the castle works harder to stay alive and absorbs more vitality from the life in the village. Not willing to give up, Naruto says that he'll rescue the village at any cost. The princess claims his actions are useless and creates a Gaara illusion. But after Naruto defeats it, she summons it back again only for Naruto to defeat it again. She then creates multiple Gaara copies to attack Naruto, which are quickly destroyed when Kakashi arrives and attacks them all with Lightning Blade. After Kakashi's arrival, Princess Dusk flees from the room.

Thanks to Kakashi removing the third seal, Naruto and the others moved on to the fourth seal and removed it. They saw Princess Kasumi pledging to make Castle Dusk, her home, full of happiness and laughter. Just then, the three people she gave gifts to before return the favor and give her a music box. As she enjoys the song it plays, Naruto and the others return to the castle. Kakashi explains that the visions they are seeing are really the sealed memories of Castle Dusk, which is now the Mugenjo Castle that Naruto and the others are in. Every time they remove a seal, the memories escape from the castle walls.

While everything they see so far is good, and after meeting up with Guy saying he removed a seal, things turn for the worst. When they find and remove the sixth seal, they see a vision of the castle ablaze in fire and people are being killed because of an attack from "The Hidden Leaf Village". After seeing this, Princess Dusk arrives filled with hatred towards Naruto and the others. She summons a Itachi illusion and sends it to fight. But after it is defeated, she flees. Soon enough, Shikamaru puts the visions they see together along with Princess Dusk words and they discover that Princess Dusk is really Princess Kasumi.

When Naruto reaches the seventh seal, he stops to question his actions. But thanks to Kakashi returning after seeing Jiraiya, they peel off the seal to discover the real attacker. Princess Kasumi's home was really attacked by Orochimaru. He tempted the princess to wear a mask, the same one Princess Dusk now wears, saying it will grant her tremendous power. But as long as her hate lingers, her mask will never come off and her spirit will be infused with the castle. Enraged by Orochimaru's deceitful tricks, Naruto goes to find Princess Dusk and tell her the truth. But words alone do not reason with her and she sends an Kisame and Shizune illusion to battle them, both of which are defeated. But thanks to the help of the three other beings from the visions, Naruto and the others find the charms, the ribbon and the music box, items that meant a great deal to Princess Kasumi when she was alive. When they approached Kasumi and showed her the ribbon and charms, her mask began to crack.

She escaped after attacking with more illusions. But while she recovered, Kabuto arrived threatening to seal her soul in a scroll unless she failed to defeat Naruto's team one more time. She ultimately fails again and Naruto shows her the music box. Her mask cracks more and she starts to regain herself. Kabuto arrives after she flees and prepares to seal her soul. Naruto chases after Kasumi knowing he is close to breaking through. When he arrives, Kabuto paralyzes him in a genjustsu. But Naruto fights his hardest and soon stands in front of Kasumi, taking the hit of the jutsu and having his vitality sealed into Kabuto's scroll. Kasumi asked why Naruto would do this and he said that she wasn't his enemy. He also mentioned it was his ninja way to protect others. Right as Kabuto plans to kill him, Gaara arrives and scares him off. Kakashi stays behind to help Naruto as the others chased Kabuto. Gaara catches Kabuto and gets the scroll back. Naruto's vitality is freed and he returns Kasumi's music box to her. It is that moment that her mask fully shatters and her real face is revealed and she joins them in destroying the castle.

When they head for the castle top floor to finish their mission, Kabuto arrives with a illusion Tsunade, showing that Kasumi never was the one controlling the illusions in this castle. She merely channeled them as the castle absorbed vitality. Naruto and Kasumi push on ahead as everyone else stays behind to face Kabuto and the growing illusions. Naruto finds the last scroll with Kasumi's real body trapped in a crystal. But Orochimaru arrives to tell Naruto he is too late. Naruto faces Orochimaru two times, once as normal and the second time using his fox chakra. While he manages to defeat Orochimaru, it was revealed as an illusion. Naruto, using what little chakra he had left plus the faith from Princess Kasumi and everyone from Castle Dusk and his friends, uses a powerful Rasengan to shatter the crystal and destroy Mugenjo for good.

After that, Naruto bids farewell to Kasumi's spirit just as the castle begins to crumble. When everything is back to normal, Tsunade sends Squad 7 on a "special" mission. When they arrive at their objective, it is revealed as a beautiful field of flowers. Kakashi explains that this field was where Castle Dusk once stood and how it was a barren wasteland until the Mugenjo was destroyed. As their mission is to discover why this happened, Naruto looks up towards the sky with a hunch and smile on his face. He believes this was Kasumi's work and her last words before fading are "Thank You...."