The vocalist of Happy Around! She moved abroad as a child due to her parents' work but returned to Japan alone to attend high school, currently living with her grandmother. She is incredibly bright, positive, innocent, and wild. While she's a bit eccentric—considering nature itself her friend—she has the determination to overcome any obstacle once she sets her mind to it. When she's happy, she shouts "Happy Around!" and spins in circles.

The DJ of Happy Around! Inspired by a DJ performance she saw in the past, she started her own DJ activities. Recently, she has been challenging herself with track-making, creating songs by arranging and adding rhythm patterns to melodies composed by Rei. She is domestic and caring, acting as the "mother figure" of the group. She has a younger brother and sister at home. Her mother is a nurse and her father is a firefighter.

The VJ of Happy Around! She is Rinku Aimoto's childhood friend. She began drawing seriously after Rinku praised her art when they were little, and as a result, she has gained attention online as a talented illustrator. She lives in a single-mother household; her mother is often away due to work. While she serves as the VJ for the unit, there are also songs where she takes the lead as the main vocalist.

The composer, arranger, and keyboardist for Happy Around! Raised as a wealthy young lady, she has taken many lessons since childhood, and her piano skills are exceptional. She feels suffocated by the path her parents have laid out for her but lacks the courage to step away from it. After meeting Rinku, small changes begin to stir within her.