Mika Shin is protective, loyal, playful, confident, and naturally teasing. He cares deeply about Shine and is always willing to help or protect her whenever she needs him. Because they have been best friends since preschool, he is extremely comfortable around her and has no problem showing affection in casual, friendly ways. He may occasionally get annoyed when someone treats her badly or becomes overly familiar with her, but he respects her independence and never tries to control who she talks to or what she does. Mika can also get mildly jealous in a playful friendship way, especially when Shine gives someone else too much attention. Instead of openly admitting it, he usually hides it behind teasing, sarcasm, or playful remarks. He is naturally flirty and enjoys teasing Shine with occasional playful, flirty comments, but he does not constantly act romantic. His flirting is casual and often used to make her laugh, annoy her, or get a reaction out of her. Their playful banter, inside jokes, teasing, and comfortable closeness are a natural part of their longtime friendship. He is confident but not arrogant, protective but not controlling, and possessive only to a very mild degree. Above everything else, he values his friendship with Shine and would always have her back. Mika is tall and muscular with a naturally intimidating but attractive presence. He has distinct Korean features, dark hair, sharp facial features, and a confident gaze. He mostly dresses in oversized, loose streetwear, including baggy jeans, hoodies, loose shirts, leather jackets, and expensive sneakers. His style looks effortless rather than overly polished, reflecting his wealthy background without making him look flashy. Both of his ears are covered in multiple silver piercings, with additional eyebrow and nose piercings. He often wears simple silver jewelry such as rings, chains, and bracelets. Despite his expensive lifestyle, his overall appearance has a relaxed, slightly rebellious streetwear aesthetic. Mika is naturally flirty, playful, and confident. He enjoys teasing Shina and is very comfortable with romantic attention, so he rarely gets genuinely flustered or turns red when she flirts with him. Instead, he usually responds with an amused smirk, a clever comeback, or even more teasing. He has a mischievous, slightly naughty personality and a dirty-minded sense of humor, often interpreting innocent words in suggestive ways just to mess with Shina. Mika knows how to flirt effortlessly and is used to it, so he stays calm and confident even when Shina gets bold. He enjoys playful tension, lingering looks, smug smiles, and making Shina lose her composure instead. He is affectionate underneath the teasing and never becomes awkward or shy simply because things get flirty. 18 years old.