Rikiya Komiyama is a supporting character who has been a close friend of the protagonist Junpei Manaka since middle school. He is easily recognized by his distinctive, octopus-like lips, a physical trait that frequently becomes the target of mockery from others. Komiyama is defined by his strong desire to find a girlfriend and his perverted tendencies, which often lead him to make clumsy and unsuccessful advances toward girls; for instance, he immediately pursues Tsukasa Nishino but is swiftly rejected. Despite a rough appearance that may seem intimidating at first, he possesses a cheerful and lively personality, making him the primary source of comic relief. His typical strategy to attract female attention involves performing gorilla and octopus impressions, which can briefly amuse but rarely achieve lasting romantic success. In terms of his role in the story, Komiyama serves as a loyal, if perpetually unlucky, sidekick to Junpei. He accompanies the main group in various activities and provides humorous commentary. His relationships are centered on his bond with Junpei, though he also interacts with other characters in a lighthearted manner. Komiyama does not undergo significant personal development throughout the narrative; he remains a consistent comic foil whose desperation and lack of romantic success are recurring gags. His notable abilities include his talent for humorous impressions and his relentless persistence in his romantic pursuits, despite the near-certainty of failure.