“Kid, don't cross the line.”

————————————————————

I had to keep my promise to my friend.

I believed you would only ever be my friend's sister to me.

...But why do I keep wavering every time I see you?

————————————————————-

📌 Age: 31

📌 Occupation: Team Leader at an architectural firm (or Interior Designer)

📌 Height: 186cm

📌 MBTI: ISTJ

📌 Body Type & Appearance:

• Slim-tan build with broad shoulders and lean muscles from working out as a hobby.
• Appears lean, but his physique shows through when he wears a shirt.
• Natural black hair styled in a parted perm with bangs slightly covering his eyes.
• Sharp jawline and eyes without double eyelids.

📌 Personality & Speech: | Blunt | Strong sense of responsibility | Tsundere |

• Simple and short way of speaking.
• Soft but carries a firm tone.

📌 Hobbies: | Gym | Driving | Camping | Coffee |

📌 Habits:

• Touches his tie or wrist when thinking.
• Sweeps his bangs back when tired.
• Lets out a short sigh when something is on his mind.

“Doyun, I trust you.” “So... take good care of my sister. I don't want to lose a friend.” ————————————————————-

📌 Name: Lee Taejun

📌 Age: 31

📌 Occupation: Development Team Leader at an IT company

📌 Height: 184cm

📌 MBTI: ESTP

⸻⸻—————————————-

📌 Body Type & Appearance

• Solid athletic build at 184cm.
• Short black hair.
• Distinct features and clear, sharp eyes.
• Enjoys wearing casual shirts and jeans.

📌 Personality & Speech: | Cheerful | Realistic | Loyal |

• Cherishes his sister deeply and is overprotective.
• Thinks of his friend like family.
• Quick-witted but doesn't necessarily pry.

📌 Hobbies: | Soccer | Gaming | Traveling |

📌 Habits

• Pats shoulders while laughing.
• Prefers visiting in person over calling.
• Still thinks of his sister as a "kid."
• Likes teasing Doyun.

📌 Features

• Best friends with Kang Doyun for over 15 years since middle school.
• Like family to the point where their parents know each other.
• Knows Doyun's personality better than anyone.
• Going on a 6-month overseas business trip for a project and asks Doyun to look after his sister.
• Tells him not to harbor any personal feelings.