Rukia Kuchiki & Ichigo Kurosaki vs. Fishbone D

Rukia Kuchiki & Ichigo Kurosaki vs. Fishbone D marks the first time Ichigo Kurosaki learns of Shinigami and Hollows as well as his first time meeting Rukia Kuchiki.

Prelude
Ichigo Kurosaki is a 15 year old high school student with orange hair and brown eyes. He has one abnormal skill: ever since he was a child he's been able to see ghosts. One evening, right after having a fight with his father, a large black butterfly enters through his bedroom window. The butterfly is soon followed by a small figured, attractive young woman wearing an all black traditional Japanese attire and with a sheathed katana at her side. He kicks the mysterious intruder, thinking she is a burglar, but she claims she is a Shinigami, a spirit invisible to most Humans, sent to the Human World from a place known as Soul Society. Ichigo refuses to believe her and tries to push her back out the window. Annoyed, the Shinigami uses an incantation, known as Kidō, to bind Ichigo's hands behind his back. She explains that a Shinigami's two duties are to send Souls who have lost their way to Soul Society and to purify evil spirits called Hollows. She was following a Hollow, but has now lost his trail because something interfered with her senses. When the Hollow attacks the house Ichigo is first to hear it's roar; they then hear a scream from Ichigo's younger sister, Yuzu Kurosaki. Ichigo asks the Shinigami to release him, but she refuses. After Yuzu's twin, Karin comes to Ichigo's room to warn him of the attack, Ichigo manages to force the Kidō off, despite the Shinigami's warning. Ichigo picks up a baseball bat and runs out of the room, he finds his father passed out and bleeding in the kitchen and through a hole in the wall sees the Hollow's silhouette.

Battle
As he runs out of his house, Ichigo is amazed to see the Hollow's shape. According to what the Shinigami told him, he expected to see something Human like, instead he is facing a 16 ft tall monster with a hideous white fish like mask. He tells himself he isn't scared, as he's seen many ghosts and the Hollow is just another ghost. Then, to his horror, he sees Yuzu in the Hollow's grip. He tries to attack but is hit by the Hollow's huge fist, knocking him back and breaking his bat. The Hollow tries to attack again but the Shinigami intervenes, cutting the Hollow's right hand which was holding Yuzu. The Hollow roars in pain and lets go of Yuzu, but Ichigo manages to catch his unconscious sister. The Shinigami tells Ichigo his family will be alright, as the Hollow hasn't devoured their souls. Ichigo asks the Shinigami why the Hollow attacked if it wasn't after his family's souls. She explains that Hollows search for and attack souls with high spiritual power, which sometimes includes Humans. Ichigo is the first Human she's met with enough spiritual power to not only see Shinigami but also resist Kidō.

When he hears this, Ichigo blames himself for the attack. Trying to console Ichigo, the Shinigami is distracted and the Hollow attacks her, throwing her into a wall. Angry at herself for failing to watch her own back, the Shinigami looks back and sees Ichigo facing the Hollow and challenging it to a battle, face to face. The Hollow attacks but the Shinigami protects Ichigo with her body, allowing the Hollow's mouth to close on her as her sword cuts through its face. The wounded Hollow backs away caressing his face and the gravely injured Shinigami falls to the ground. She tells Ichigo his power is no match to that of the Hollow and that his own death won't protect the rest of his family. Now, since she can no longer fight, they can only wait until the Hollow makes a meal of them.

Seeing Ichigo's distress, the Shinigami offers him a way to protect his family. She says the only way left is for Ichigo to become a Shinigami himself. In order to do that she must stab Ichigo through the middle of the chest with her katana, known as a Zanpakutō, so she can insert half of her Shinigami powers into him. He will then temporarily attain the powers of a Shinigami and be able to defeat the Hollow. She believes given Ichigo's spiritual nature, there is a high probability of failure, in which case Ichigo will die. However, they must try, as it is their only hope. Ichigo hesitates, but then hears Yuzu calling his name in her dream, telling him to stay away from danger. Ichigo realizes that his family loves and worries about him even while in mortal danger themselves and figures his own worries for himself are foolish. He asks the Shinigami for her sword, saying he will try what she suggested. The Shinigami introduces herself as Rukia Kuchiki. Ichigo also introduces himself and says he hopes it won't be the last words they say.

The Hollow has recuperated enough to resume his attack; he starts approaching the two again. Ichigo grabs the hilt of Rukia's sword and pierces his chest with it. As the Hollow closes in for the kill, his right arm is suddenly cut off. The Hollow looks behind him at his severed arm. Before it he sees Ichigo dressed in the uniform of a Shinigami and holding a huge sword, as long as his entire body, in his hand. Rukia is shaken up when she realizes instead of taking half her power, Ichigo took all of it. She realizes when she entered Ichigo's room her senses were clouded by the vast spiritual power pouring out of him. She also marvels at the size of Ichigo's Zanpakutō, another indication of his spiritual power. Ichigo charges at the Hollow, cutting off its left leg at the knee. The Hollow stumbles and falls on top of Ichigo, but he is prepared. He tells the Hollow he will regret his attack on the Kurosaki family as he swings his sword, cutting the Hollow in half and killing it.

Aftermath
Having lost all her powers, Rukia can neither continue performing her duties, nor return to Soul Society. She enrolls as a student into Ichigo's school, the Karakura High School, in an attempt to enlist his help to fight off the Hollows and send lost Souls to Soul Society.