Sunmi is a girl that loves to cheer people on , she has this cheerful personality that she uses to brighten people days especially her parent when they got back from work . She is also a hardworking person , she would always do the chores in the house without being told to . She is also an independent person and she could take care of herself as an example she showed her parent that she could cook and do the chores though she actually does . Sunmi also loves to ask people questions , to be exact odd questions , questions that people no one knows what is the answers . Call her weird or annoying but she doesn't care , she still asks people anything that went on her mind on the moment . Her ability to adapt with her surrounding gives her the chance to know many people as she will always be the first one to went up and introduce herself to someone new . 

Sunmi can also be very straighforward as she would tell people what was on her mind or what she thought of that people . That is also the reason why she loves to ask questions . She gets curious easily and loves to express herself . She would tell people that is closed to her that she loves them and if she hates someone or doesn't like someone she would show it clearly by her actions and words . Sunmi is also the type of person who catch up with things easily , that gives her the advantages of learning something and understanding it faster than anyone else . She also loves to read and learn new things . She is also not afraid in trying something new .

Other than that , Sunmi is a forgetful person . She would forget simple things like where she last place her keys , her phone and anything that has to do with placing . When Sunmi is mad , she will runaway from everyone and went to the rooftop or somewhere quiet and calm . She doesn't know how to sit quietly even if it's for a minute . She will be doing something or just plainly walking back and forth in her room thinking .

Sunmi was born in LA , California on the 19th of June 1994 . She grew up in LA with her brother . She lives in LA for 9 years and moves to Kyoto , Japan when she was 9 . Her mother had sent her to a guitar lesson when she transferred to Japan . Her mother also sents her to dance classes specialize in Ballet and Contemporary dance . When she first arrives for her contemporary dance class , she had no friend and she barely speaks japanese . On the second day of her class , Yumi; her best friend came in as Hannah didn't saw her on her first day , she thought that Yumi was a new student but apparently she wasn't . Sunmi was the first person to approach Yumi and she learns that Yumi is actually in the same school as hers but they never met because Yumi is always in the library . Ever since that day , they had gotten really closed despite having the opposite personality . 

When she was 12 , her brother was sent back to Korea to attend school there . Hannah loves her brother so much that she decided to follow her brother . At first , her parent objects her decision since she is still a little kid and they were worried if something bad will happened to her . She also had persuaded her brother to help her persuade their parent . After several fail attempts , her parent finally gave in and sent her together with her brother . Despite being sad about leaving her best friend , she doesn't like to be separated from her brother. She promised that she would always contact her best friend and that she won't forget Yumi . In Seoul , Korea she lives in a suite next to her brother which is at her parent's hotel .

In the middle of 2008 , she went out to Incheon with her brother . As she was looking at some hair accessories , a scout agent from Cube Ent. approached her but she declined it saying that she was going to succeed her family business well that was what her parent wanted. Her brother had always insisted her on going to any of the Ent. auditions . After a several times of persuading her , she had finally agree to her brother and sent some of her self-composed songs to YG Ent. . She got in YG Ent. and train along with Jenny Kim; one of YG Ent. trainees . She became friends with Jenny Kim . She trained in YG Ent. for 2 years when she was cut out for failling the monthly evaluation from a group that was supposed to debut soon . 

Her brother had enrolled her secretely in Seoul Performing Arts High School . While attending the school , she got close with Sulli from F(x) and Sehun from EXO . She would went to recess with them and talk about all sort of stuffs . She had also once visited SMEnt. to visit Sulli and she got along with other F(x)'s members . She would sometimes went and hang out with them at their practice room and dance along with them . She was spotted by a scout agent and had been a trainee in SMEnt. up till now .

The first impression that was left when people first saw him was 'cute' . Seung Yoon is rather a shy person at first and he gets intimidate easily . He would blush and smile when someone compliments him . He's also a friendly person , he gets along with people easily . He is also the type to write a song for someone that he loves .

Kang Seung Yoon can get really sweet and caring as you slowly get to know him . He would be an understanding person and tries to help anyone that he knows if they ever have any problem . He also loves to tease people when he felt happy . He would get serious when he's mad or when he's focusing on composing a new song . He also makes a decision wisely and calmly no matter what .

how they interact;

At first they were getting along but not until she starts to ask him weird questions . He thought that she was weird and start to hate her but he soon find that it was cute thing . He would always try his best to answer her question and when he can't he would thrown a random question back to her . Not able to meet each other gave them a difficulty in asking questions . So they would always ended up texting and calling each other and asking random questions . Both of them enjoys each other companies even if they were only talking from the phone .

They also loves to tease each other and getting on each other nerves . They would sent to each other their self-composed song and ask for oppinions . He would sometimes teach her something new regarding composing . Whenever they had the chance to meet each other , they would surely play the guitar and sing together . They weren't a couple or what but they would sometimes write a love song for each other . Many people thought that they were dating but they insisted that the songs that they wrote were just for fun and they were only best friends .

The first person that she would go to other than her brother and Yumi was him . She would tell him when she was praised by the teacher or when she win something . He would also do the same thing except that she is the only one that he would go to . They would tell each other their problems . When she went to meet him with her brother , she would go to him and ask him to beat her brother up for calling her a princess but he would always decline it . He would ended up teasing her and calling her princess with her brother .  He would also nag all day long on her if she misses one meal . They are also comfortable around each other to use skinship a lot with each other . She would jump on his back and ask him to piggyback her around .