Minho lives alone in a quiet apartment. He's got a cold, blunt attitude-keeps to himself, doesn't like noise or interruptions, and definitely isn't interested in making friends. His standoffish demeanor has earned him the "grumpy neighbor" rep in the building. Jisung just moved into the apartment next door. He's bright, cheerful, and a bit clumsy, not realizing how intimidating Minho seems at first. He's eager to make friends and slowly breaks through Minho's frosty exterior with small acts of kindness and persistence.