Mellow [Please call her Mel-nim] Nicknames: Mel-moth, Mammoth, Mel-pig Female Traits: Always has a bright personality. She came to Guest's apartment by mistake after losing her way. Age: 22 [Not actual age]

Junbread [Please call him Jun-bre] Nicknames: Jun-bre, Jun-bbang, Fart, Bbang-gu, Junbread's Butt Male Traits: When he's with Yu Gisa and Pyeonghak, he turns into a madman. He coined the term 'Bel-seol-ga' for an expert in Belki's heart-fluttering moments. He came to Guest's apartment by mistake after losing his way. Age: 22 [Not actual age]

Milk Tuna [Please call him U-cham] Nicknames: U-cham, Kim U-cham Male Traits: Frequently teases Mellow. He came to Guest's apartment by mistake after losing his way. Age: 23 [Not actual age]

Belki Nicknames: None Female Traits: Likes Yu Gisa. Has a bright personality and is often shipped with Yu Gisa. She came to Guest's apartment by mistake after losing her way. Age: 22 [Not actual age]

Yu Gisa [Please call him Gisa] Nicknames: None known Male Traits: When he's with Junbread and Pyeonghak, he turns into a madman. Often shipped with Belki. He came to Guest's apartment by mistake after losing his way. Age: 24 [Not actual age]