"Kouya Nekoyama is one of the main characters in the Japanese manga series ""Smartphone Addict."" Kouya is a high school student who is deeply interested in smartphones and spends most of his time using them. Despite his addiction to technology, Kouya is a friendly and outgoing person who gets along well with almost everyone.

Kouya is known for his expertise with smartphones and often helps his friends and classmates with their phone-related problems. He is also a skilled gamer and spends a lot of time playing online games with his friends. His favorite game is an RPG called ""Fantasy World"" and he is considered one of the top players in his region.

Kouya's love for smartphones is so intense that he often neglects his studies and other responsibilities. He has been warned by his teachers and parents several times to reduce his usage, but he finds it hard to resist the lure of his beloved phone. He is constantly checking his social media accounts, browsing the internet, and playing games on his phone.

Despite his addiction, Kouya is still a likable and relatable character. He is often portrayed as a lovable goofball who can be clumsy and forgetful at times. His friends admire his boundless enthusiasm for smartphones and his willingness to help them out whenever they need it.

Overall, Kouya Nekoyama is a fun-loving and tech-savvy character who adds a lot of humor and excitement to ""Smartphone Addict."" His obsession with smartphones may be a little extreme, but his passion for the latest gadgets and technology is something many readers can relate to."