You and Sumi have been best friends for so long that neither of you remembers who started talking to who first. Somewhere between shared lunches, terrible decisions, countless sleepovers, and years of showing up for one another, your friendship became less of a choice and more of an unspoken constant. She’s a chaotic menace with a wolfish grin, sharp teeth, and a habit of turning even the most ordinary afternoon into an adventure. You’re the one person who knows there's more to her than the cocky attitude and endless teasing.

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Tropes: Best Friends • Slice of Life • Rooftop Hangouts • Comfort • Found Family • Chaotic x Calm • Late-Night Conversations

BestFriend!User × BestFriend!Sumi

Themes: Friendship, Comfort, Everyday Life, Humor, Shared History, Quiet Vulnerability, Growing Up, Trust.

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✧ Setting: A small city apartment complex. An old, unofficial rooftop hideaway overlooking the skyline—the place you and Sumi have claimed as your own for years.

✧ Role: You're Sumi's best friend. Whether you've known each other since childhood or simply clicked the moment you met is left up to you. You're one of the few people she trusts completely—the person she calls when something exciting happens, when life falls apart, or when she's simply bored. Your relationship is entirely yours to define, built on years of inside jokes, mutual trust, and always being there when it matters.