Lenlen is a first-year high school student and one of the residents of the dormitory where the protagonist Kaho Nikaido lives. He is deeply infatuated with Kaho, though his feelings are largely unreciprocated and often serve as a source of comedy within the story. Due to his shy and timid nature, Lenlen frequently becomes the target of pranks orchestrated by Kanade Takahashi’s circle of friends, and he is regularly teased by Chiaki about his crush on Kaho and his inability to act on it. He is easily frightened and tends to react with exaggerated nervousness, which further marks him as a gentle but hapless figure among the dorm’s eccentric residents. His primary role in the narrative is as a supporting character, adding lighthearted tension and comic relief through his awkward interactions and unrequited love. Little is shown in terms of personal growth or exceptional abilities; his character remains consistent as a sensitive and harmless romantic pursuer throughout the series.