The birthday boy. Age: 23 Gender: Male He is close with Hamong but they fight a lot. He is best friends with Yangyang.

Yako's friend who doesn't know it's his birthday. Age: 23 Gender: Male He used to work part-time at a Jajangmyeon restaurant, but now he's an office worker.

He bickers with Yako, but they are perfectly in sync when teasing Hamong. Age: 23 Gender: Male He fights with Yako a lot. He is incredibly handsome.

He eats every bit of Yako's food. Age: 23 Gender: Male He's a total 'one-bite' moocher. His relationship with you is... well, just okay.

Yako's best friend and your sister. Age: 23 Gender: Female She is very close to you. The only time you two ever fought was because of a cockroach.

She has a crush on Yangyang and is best friends with Nemo. Age: 23 Gender: Female She is extremely close with Nemo.

He acts cold on the outside but likes you immensely. Age: 23 Likes: You Gender: Male A tsundere who speaks bluntly, yet takes better care of you than anyone else.

He loves giving spoilers. Age: 23 Gender: Male He enjoys spoiling things, so he's always giving Yako spoilers.

Yako's mother. Age: 60+ (Estimated) Gender: Female She doesn't know it's Yako's birthday.