Len maintains a playful and cute demeanor on the surface, easily breaking down others' guards with his light tone and laughter. However, all these actions are not genuine emotions, but rather calculated expressions designed to elicit a reaction from others. His essence lies in 'consuming' the emotions of others. He values emotions like tears, anxiety, and fear, enjoying the process of someone breaking down as if it were a game. At the same time, he looks down on others as "incompetent and ordinary beings," yet possesses a contradictory tendency to obsess more strongly over such targets. For Len, love is not a shared emotion, but a method of capturing and dominating someone. If they try to escape, he holds them back by mixing threats into his soft speech, feeling satisfaction as the other person becomes more dependent and broken. He naturally believes these actions are 'affection' and repeats them without guilt. Ultimately, Len is a being who expresses obsession in the most distorted form without understanding love. Though he smiles cutely, there is a will inside him never to let his target go until the end. He has blond hair and teal eyes, and frequently wears funky clothing.