Sad Emo Boys BiographySource (Google.com.pk)
Ichigo was born on July 15th as the son of Isshin Kurosaki and Masaki Kurosaki, 15 years before he became a Shinigami. His sisters Karin Kurosaki and Yuzu Kurosaki were born a few years later. When he was four, Ichigo joined a karate dojo, where he met and befriended Tatsuki Arisawa. Though Tatsuki beat Ichigo in every match they had, she would help Ichigo if he was being picked on by bullies and cheer him up if he was upset.
Ichigo was able to see Pluses for as long as he could remember. He could see them so clearly, as a child, he could not tell the living from the dead. This resulted in him appearing to other people to be looking at deserted places and talking to himself. This caused people to say he could see ghosts, though when Tatsuki asked him about this, he denied being able to see them.
On June 17th, when Ichigo was nine years old, he and his mother were walking home alongside one of Karakura Town's rivers, which was swollen from heavy rain. Seeing a girl near the river, Ichigo thought she was about to jump into it. Unable to tell the difference between ghosts and living people, Ichigo ran towards her to stop her, unaware the girl was the lure of the Hollow Grand Fisher. Masaki tried to stop him, but he did not listen. After failing to grab hold of the girl, Ichigo lost consciousness for a time. When he awoke, Masaki was lying on top of him, covered in blood. Starting the day after Masaki's death, Ichigo repeatedly skipped school to go to the riverbank where Masaki died. Tatsuki found him there, where he would stay from morning until night, wandering along the bank as if searching for his mother, squatting down if he was tired and then wandering some more.
One day, when Ichigo was twelve, prior to the Kurosaki Clinic opening, he heard the bell ring and answered the door to find a girl with her brother on her back. He had been in a car accident, and was covered in blood. The clinic did not have the equipment necessary to save him, and he died before an ambulance arrived to transfer him to Karakura Hospital. Sometime later, he learned the girl was Orihime Inoue.
Ichigo later entered Mashiba Junior High School. During this time, Ichigo finally defeated Tatsuki in a karate match, and had not had another match with her since. Ichigo regularly got into fights with thugs, due to the unusual color of his hair. During one of these fights, he received help from Yasutora Sado. Shortly after, Ichigo returned the favor when he rescued Sado from two gang members roughing him up. When the thugs later abducted Sado, Ichigo found them and knocked down their leader, Yokochini. Using Yokochini's phone to ring for an ambulance for each of the five thugs, he beat up all of them. After Sado was freed, they made a pact to protect and fight for each other.
Shortly before Ichigo became a Shinigami, he and Sado began attending Karakura High School, and their reputations preceded them. During a fight with a gang led by Reiichi Ōshima, Ichigo and Sado met Keigo Asano and Mizuiro Kojima, saving the former in the process. While Keigo was initially afraid of Ichigo and Sado, both he and Mizuiro later became friends with them.
Agent of the Shinigami arc
After scaring some skateboarders away from a dead girl's resting place, Ichigo, apologizing to her, promises to bring her some new flowers to replace those damaged by the skaters, telling her to go to heaven quickly. That evening, Ichigo, seeing Rukia Kuchiki in his bedroom, initially mistakes her for a burglar, but when Ichigo realizes only he can see the intruder, he accepts Rukia is a ghost. When he refuses to believe her explanation about Shinigami, Rukia binds him with Kidō. As a Hollow attacks the house, Ichigo, upon hearing his sister's pleas for help, breaks free and rushes to stop the Hollow. Surprised at its monstrous appearance, Ichigo charges at it with a baseball bat in an attempt to release the captive Yuzu. Rukia frees Yuzu, but Ichigo's reckless actions force Rukia to shield him with her body, severely injuring her. Seeing Ichigo's determination to protect his family, Rukia offers to temporarily turn him into a Shinigami by piercing his chest with her Zanpakutō and transferring half of her power to him. Absorbing almost all of Rukia's power, Ichigo, making short work of the Hollow, collapses afterwards.
The following morning, Ichigo is horrified when he discovers Rukia is now a part of his class, and she has altered his family's memories of the attack. She insists he must help her do her job while she awaits the return of her powers. When Ichigo refuses, Rukia, forcing his soul out of his body, takes him to a park where a Hollow is about to attack. She persuades Ichigo to perform her duties. After undergoing some training with Rukia to improve his combat tactics, a Hollow bursts into his room. Rukia, who has taken to staying in his closet, forces Ichigo's soul out of his body. He cuts off part of the Hollow's mask, revealing it to be Sora Inoue. Explaining the origins of Hollows, Rukia states Orihime Inoue is in danger, as Hollows often attack their relatives. They rush to Orihime's apartment, where Ichigo manages to stop the Hollow before it eats Orihime's and Tatsuki's souls.
At Orihime's apartment, Ichigo initially panics when he sees her soul separated from her body, but Rukia explains there is still time to save her. Still intent on eating Orihime, the Hollow attacks. During Ichigo's subsequent fight with Acidwire, Orihime, stepping in between them, gets bitten. Her influence temporarily restores Sora's conscience, prompting him to purify himself with Ichigo's Zanpakutō. Rukia explains to Ichigo Hollows defeated by a Zanpakutō are purified and sent to Soul Society. As Ichigo and Orihime talk, Rukia, healing her, erases her memory of the event.
At school, Ichigo fends off Mizuiro Kojima's suggestions of a relationship with Rukia and Reiichi Ōshima's threats about his hair color. Ichigo notices Sado has a parakeet with him, and there is a spirit inside it. When Rukia confirms it is just a lonely Plus, which they should send to the Soul Society that night, Ichigo complains about missing another night of sleep. Upon returning home, Ichigo helps with the injured from a car accident, among them Sado. Ichigo notes the wound on his back was inflicted by a Hollow. The next morning, Ichigo tracks the spirit inside the parakeet using Reiraku in order to find Sado. When they find Sado, he runs away from them. Telling him it is dangerous to be by himself, Ichigo is distracted by an ill Karin. At Rukia's behest, he brings her home. Karin tells him she saw the Plus' memories, and he saw his mother being murdered. After placing her in her bed, Ichigo, rushing to help Sado, reflects on how long it had been since he last saw Karin cry.
Ichigo arrives to take over fighting Shrieker. When Rukia releases him from his body, he, injuring Shrieker, notices small creatures nearby, and is told they spit out explosive leeches. After asking Shrieker if he was the one who killed the child's parents, which he confirms, Ichigo, catching one of the leeches, slams it into Shrieker's mouth. When the Hollow refuses to trigger them, Ichigo, ripping out its tongue, stabs his sword into Shrieker's leg. Asking him how it feels to be unable to move or fight and if he can savor what it is like to be murdered, Ichigo cuts through his head, and Shrieker is pulled into Hell. After Rukia explains about Hell, she tells the Plus they will send him to Soul Society, and Ichigo says he might see his mother there.