I Rely on the Informant System to Be an Enthusiastic Citizen in Crime Fiction

Guan Xia was reborn with her memories intact, always believing she had a script for a second chance at life, one filled with striving and making progress. Thus, from the moment she could speak, she diligently studied painting and pursued art school, drawing upon her past life's experiences and hobbies. She eventually became a well-known cartoonist. By the age of twenty-five, she was living her dream retirement life.

Just as Guan Xia was happily spending her days drawing comics and traveling, completely lost in her enjoyment, one day, a murder occurred in Guan Xia's building unit. When the police arrived for routine questioning, an interface suddenly appeared in Guan Xia's mind, displaying:

Informant System successfully bound.

You were questioned by the police. You suddenly remembered that on April 19th at 17:53 PM, while returning home, you encountered a nervous repairman in the hallway. His sleeve cuffs had a few stains, which you acutely perceived to be bloodstains. You decided to tell the police.

Guan Xia: ?