I'm not entirely sure as there could be different stories with this title. It might be about a boy who has some sort of condition or is in a situation where he is lacking in intelligence or normal brain function. Maybe it's a fictional story exploring how he copes in a world that requires mental faculties.
I don't think we can assume it's a horror story just from the title. It could be a fictional story in a fantasy genre where the concept of a boy without a brain is part of a magical or otherworldly setting. Or it could be a story with a moral lesson that uses this extreme concept to make a point about intelligence, humanity, or something else entirely.
I recommend you to read "The Manga Artist Walking the Heavens." It's a novel about the infinite universe. It tells the story of the manga artist who transmigrated to another world and used his manga skills to collect all kinds of cultivation techniques and skills. It was both entertaining and mind-blowing. There was also "Manga Fever", which was a fantasy novel. The main character obtained the memories of a parallel world and created many different manga styles. The story was fast-paced, and one had to use their brains to guess the ending. I hope you like this fairy's recommendation. Muah ~😗
The love brain referred to those who were completely devoted to love once they started dating. They could give up everything for love and place each other in the most important position. Some people thought that the love brain was cute and that dating such a person would give them a great sense of happiness. However, most people were cautious about love brains, thinking that their lack of assertiveness would put a lot of pressure on them. A boy with a love brain would only pay attention to his girlfriend when he was in love. He would focus on his girlfriend and not do anything else. The love brain was a phenomenon that both men and women had, but the boys were not willing to admit it. Boys with a love brain were often emotionally sensitive, afraid of being abandoned, and nervous. They often placed all their emotions on each other and paid special attention to each other's every move, thinking that it was related to them. They easily forgot that girls also had the ability to adjust their emotions. In general, the love brain was a way of thinking that placed love above all else. It was manifested by a strong dependence and sacrifice on the lover.
One way to get anime and comics of the brain is to browse popular online marketplaces that sell digital or physical copies. Another option is to follow social media accounts of creators or publishers in this field for new releases and suggestions.