oikawa hiromi

He's truly brilliant, even considered a genius. He was Lili's childhood friend in kindergarten until he moved to America to study criminal psychology. He has an allergy to girls, triggered by Lili when she didn't respond to Hiromi's love letter, causing him to break out in rashes whenever a girl touches him. Lili accidentally left the letter in one of her notebooks and found it ten years later, leading to an embarrassing moment where Hiromi had to admit that he wrote the love letter. She explains that she couldn't read the letter back then because they were only in kindergarten and Hiromi was so advanced. He was nicknamed "Hiro" by Lili during their kindergarten days. Hiromi has a crush on Lili, often showing it through bitter and sarcastic behavior towards her. Many characters in the manga notice this and point it out, but Lili never realizes it. The story includes some romance, but "Zodiac P.I." focuses more on mystery than romance, creating a vibrant balance between the two genres, making it an engaging and humorous read.