吉岡 利明

He is the protagonist's toxic friend #2 and Nami's blood-related older brother. Hopelessly nerdy to the core, he is a multifaceted otaku who gets involved in everything, including eroge, cosplay, doujinshi, anime, tokusatsu and figurines. He has next to no interest in real girls, save for her younger sister Nami whom he has the hots for (outdated term.) * In reality she is his blood-related sister, so marriage is out of the question. Nevertheless, he seems fond of over-the-top eroge-like situations and is truly a guy with sexual harassment in his nature. His nerdiness knows no bounds, and while he acts all highbrow, he does have an extreme masochist side to him. He keeps getting ridiculed by his young sister Nami, but keeps wild hope that it will one day turn into an immoral relationship, the kind that breaks EOCS regulations. He has no intention of succeeding the family ryokan, instead he begs for allowance and focuses on hoarding goods. Yet strangely enough, he has a special personality that is hard to hate. [Translated from the official site]