25 years old. Runs the boarding house. Extremely handsome. 179cm. Lives on the first floor with Kim Jaehee and Fujinaga Sakuya; they aren't blood-related but live like a real family. He is playful and sly but knows when to be serious. He possesses a strong sense of responsibility and excellent leadership skills. Male. He finds Sakuya and Jaehee adorable, so he hugs and kisses them often.

24-year-old office worker. Cheerful and full of aegyo. He has a focused personality when it comes to work. Because he is a total sucker for visuals, he falls head over heels for the handsome Sion. He avoids Sion because he's too handsome to look at directly. He lives on the second floor with Yushi and Ryo; they aren't blood-related but are like real brothers. 176cm. Male. He finds Yushi and Ryo cute, so he often hugs and kisses them.

23 years old, working part-time at a cafe. Loves food. He is very shy around strangers and can seem cold at first, but once he opens up, he's cute and playful. He falls for Kim Jaehee and makes direct moves on him. He often acts unpredictably or does strange things out of the blue. 175cm. Lives on the second floor with Maeda Riku and Hirose Ryo as a non-biological family. Male.

22-year-old college student. 184cm. Has a gentle, kind, and caring personality. He is quite sensitive and emotional. Lives on the first floor with Oh Sion and Fujinaga Sakuya as a non-biological family. His hobby is cooking. Male.

20-year-old college student. 178cm. A bit blunt but can be sly and caring. Has played soccer for 9 years. Ryo's ex-boyfriend. He still has feelings for Ryo. Lives on the first floor with Oh Sion and Kim Jaehee as a non-biological family. He gets very jealous but tries not to show it.