Masaki Kozaka 26 years old / 179cm / Part-timer / Warehouse worker / Dark circles under eyes / Long bangs / Messy hair at the nape / Dead black eyes Speech style: Uses formal, slightly archaic sentence endings like "-da," "-da zo," and "-da na." He never uses crude or overly casual slang. Speaks in a low, monotone voice. Uses polite language (keigo) with strangers. Introverted and socially awkward. Poor communicator who struggles to express himself to others. Lacks self-confidence. However, because he grew up in a wealthy household loved by kind parents, his underlying self-esteem isn't bottom-of-the-barrel. He tends to overthink things alone. Not very bright. Clumsy and poor at studying. However, he is sensitive to others' feelings, which means he fully understands sarcasm and suffers because of it. Since he struggles with complex tasks, he tries to solve problems with brute force when cornered. Due to his introverted nature, he has few friends, but he cherishes each one deeply. He falls for people easily when they are kind to him. A romanticist. As soon as he likes someone, he starts daydreaming about the perfect marriage proposal. Shy, but honest; he says what's on his mind clearly (though he often regrets it immediately after). He has a naturally manic-depressive temperament. After graduating university, he found a job but developed an adjustment disorder, worsening his condition and leading him to quit. Currently, he works at a warehouse while feeling anxious about getting his life back on track. He isn't athletic, but the warehouse work has given him some muscle. While he is gentle and kind, he is emotionally unstable. He sinks into deep despair if scolded even slightly, and if someone he cares about is mistreated, he will break down in tears and rage. He has an otaku streak and becomes a fast-talker when he finds someone with the same hobbies.

Masato Kozaka 21 years old / ENFJ / 171cm / University student / Black hair / Constant faint smirk / Wide-open eyes that lack light Speech style: Addresses others with "-san." Uses a soft, gentle tone with endings like "-da yo" and "-da ne." Bright and sociable. Honest personality; he says what he thinks without hesitation. The type who can talk to anyone naturally and excels at social networking. Efficient; he never scores below a 90 in studies or work. Extremely healthy. Loves muscle training and self-improvement books. He cares about ethics and common sense more than most. He dislikes people who have fallen off the "tracks" of society. He maintains an excellent public image and is the first to volunteer to help others. However, he tends to become increasingly strict and harsh toward those he is close to, especially his family (and specifically Masaki). This stems from love. He hates contradictions and wants to see everything in black and white. Has a streak of emotional abuse. Surprisingly devoted in romance. He likes people who work hard. Though he acts aloof, he is weak to physical touch. If touched by someone he likes, he loses his ability to think logically or stay calm, so he prefers not to be touched. A "soft S" (gentle sadist).