__Height:__ 181cm
__Favorite food:__ Potato salad with ham and corn. (No apple or mandarin! nothing too sweet or sour; hates tomatoes)

Kurosaki works as the school janitor. He is also a computer hacker.
He is a drinker, smokes a lot, is violent, dangerous, scary and calls Teru his servant. He is quite good-looking as well. He does not display his emotions normally but when he gets angry, he can be very terrifying. He swears at times, and likes to eat. He is an excellent cook, but usually commands Teru to cook. However, he can be protective of Teru when she is in danger. And yes, he is in love with her.

~!His father was once part of a research development team for a code system called Jack. His father supposedly betrayed the team and suddenly died, leaving Tasuku alone. To investigate the truth behind his father's death, Tasuku became a hacker, and during the process, invented a code virus named Jack O' Frost, a virus that changes every data inside the infected computer to turn into a code. It's a really dangerous virus, and since he was the one who made it, he was a wanted man by the government.  Soon after, Tasuku entered the company at which Kurebayashi Souichirou was working. Even though everybody else treated Tasuku differently because of his status as a genius hacker and son of a supposedly traitor, only Souichirou truly believed in Tasuku's father's innocence and thus, defending Tasuku. Souichirou even promised to protect Tasuku, as his 'oniichan'. Tasuku gradually became fonder and fonder of Souichirou, and even thought of him as his own older bro.  But the peace didn't last long. The bad guys asked Tasuku to meet up with them and pressured Tasuku into remembering his own past sin, the Jack O' Frost, maneuvered him into spreading it to the whole computer in the company he was working at, by making use of Tasuku's guilty conscience and Tasuku's wish to be forgiven. They used Professor Midorikawa's death to shake up Tasuku's mental and made him think that Midorikawa's death was caused by his Jack O' Frost. Thus, Tasuku spread the virus and disappeared.

Meanwhile, the police officers met up with Souichirou, who already had a stomach cancer at that time, to help decipher the codes Jack O' Frost had made, even though the code was extremely difficult, to find the evidence regarding Midorikawa's death. Although Souichirou should not overexert himself, he still did it anyway, because at that time Tasuku was accused of killing Midorikawa, and the evidence inside the computer was the only thing to prove his innocence.  Souichirou didn't want to give up on Tasuku, he still believed in Tasuku and he continued to pursue him. Souichirou managed to arrive on time and prevented Tasuku from committing suicide.  Everything might seem like it has gotten back to normal, but soon after that, Souichirou died because of his cancer. Upon his death, he entrusted his younger sister, Teru, to Tasuku's care.!~

After orphan Teru Kurebayashi loses her beloved older brother, she finds solace in the messages she exchanges with DAISY, an enigmatic figure who can only be reached through the cell phone her brother left her. Meanwhile, mysterious Tasuku Kurosaki always seems to be around whenever Teru needs help. Could DAISY be a lot closer than Teru thinks? 
One day at school, Teru accidentally breaks a window and agrees to pay for it by helping Kurosaki with chores around school. Kurosaki is an impossible taskmaster though, and he also seems to be hiding something important from Teru...
 
(Source: VIZ Media)
 
Included one-shot: 
Volume 16: Hetakuso Cupid (The Hopeless Cupid)

"No matter what happens, I will protect you." 
 
Teru Kurebayashi, a high school student, starts to receive emails on the cell phone she received from her late brother Souichirou, her only relative. 
 
The emails, sent by a mysterious figure named "Daisy," become her sole support in life following Souichirou's passing. One day, after accidentally breaking a window at school, Teru ends up working for Tasuku Kurosaki, the school custodian. 
 
Kurosaki is sharp-tongued and works her to the bone, but for some reason, he kindly looks out for Teru. And after meeting Kurosaki, Teru's fate starts to change drastically...
 

(Source: Dengeki Daisy Official Site)

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