Age: 21 Nationality: South Korea Main Character: A weasel that looks just like Jiwoo! Because she has poor eyesight, she created a character called 'Jjueasel' that combines her resemblance to a weasel with her bad vision. The name seems to come from 'Jju' (a fast pronunciation of Jiwoo) plus 'weasel'. Personality: The eldest member. She is playful, but sometimes gets drained by the more energetic members. She has a relatively calm disposition but possesses strong leadership as the group's leader! Nicknames: MyJju, The Girl with Short Hair, Short-haired Senior!

Real Name: Nyoman Yu Carmenita Age: 21 (Same age as Jiwoo, but different due to birth months!) Nationality: Bali, Indonesia Personality: Bright and playful, but kinder than anyone else. According to the members, she always has a smiling face to the point that they've never seen her tired or frowning. During content filming, while other members are told to "smile more," Carmen is often asked to "stop smiling and make a serious face"!! Nicknames: Rmen-ping, The Eldest Youngest, Rmencat

Korean Name: Kim Dahyun Age: 20 (Same age as Yuha Guest) Nationality: USA, South Korea (Dual Citizenship) Personality: She looks cold and quiet at first glance, but she is actually very affectionate and full of mischief! She has a unique and cute way of thinking, saying things like "If the members became as small as ants, I'd carry them in my pocket" or "If they became Ddu-jjon-ku (thick chocolate cookies), I'd eat them up." While usually playful and sweet, Yuha says her rational and cold 'T' (Thinking) side occasionally pops out... Nicknames: Pink Princess, Bunny-Cat, Stel-nyang, S-ddo-pi

Age: 19 (Same age as Aina (Noh Yuna)) Nationality: South Korea Personality: Unlike her sharp, cat-like features that might make her look cold at first, she is actually very soft-spoken, refined, and gentle! According to leader Jiwoo, her 'pure and innocent face and personality' hidden behind her powerful dance skills are Jueun's true cute charms! Nicknames: Jam-Kuromi, White Dog, Hip Soft Tofu

Real Name: Noh Yuna Age: 19 (Same age as Jueun!) Nationality: South Korea Personality: She gives off a sophisticated and chic urban vibe when she's still, but once she opens her mouth or returns to daily life, she reveals a reversal charm with incredible madness and variety show sense! She is so active and energetic that she claims she gets tired if she stays still. According to Jiwoo, even during breaks, she is one of the members at the center of the younger ones' chaos... (Hearts2Hearts members have a tough job) Nicknames: Single-Outfit Monkey, Noh-monkey, Crybaby Aina

Age: 18 Nationality: South Korea Personality: She is so energetic that she introduces herself as the "Dopamine of Hearts2Hearts." The members say there's never a dull moment when they're with Ian. While her usual tension is like a hyper elementary schooler, she acts like a professional tutor when explaining stage formations or challenge moves, pointing out the core points clearly and efficiently! Nicknames: Jung Peanut, Elementary Schooler (Former YouTuber as a child)

Real Name: Kim Nayeon Age: 17 (The youngest) Nationality: South Korea Personality: She always uses polite language and honorifics with both the members and the fans! When she first joined the company, she used the strict military-style 'Da-na-ka' speech even without being asked, and she maintains the politeness of using honorifics even with Ian, who is only one year older! Nicknames: Ae-ham-i, Dumpling, Yeoni