Yoona: is a cheerful, sincere and kind person who likes to help people. Yoona come from a wealthy family. Yoona's family owns one of the biggest university in South Korea. But..Yoona always use the money to help the poor and the needy. Yoona owns a pet shop. There are many cats, dogs, hamsters and geniue pigs inside Yoona's pet shop. But..unlike any other pet shops, Yoona always give away the animals for free. Actually..all the animals inside Yoona's pet shop are all cripped in a certain way. All of them were once abandoned on the streets where no one really want them. But..Yoona decided to took them home and care for them. The reason why Yoona opened the pet shop is because Yoona know that there will still be someone who is kind enought to love and care for this poor animals. Besides Yoona is kind, Yoona is also very beautiful. Althought Yoona is very pretty and Yoona totally just look like a girl, but Yoona actually is a.......guy. During college time when Yoona was transfered to another college, Yoona ever prank everyone by disguised himself as a girl by wearing girl's dresses. In less than a month..all the guys in the college had fall in love with Yoona, and he became the most famous girl in his college. Now..Yoona had captured many girls heart when they had found out that Yoona is a guy. Many girls always goes to Yoona's pet shop just to see him. But..Yoona once had a heart disease. He ever went throught a heart surgery once. 

Suzy: is a pretty, quiet, sincere and a kind girl. Suzy is an orphan. Suzy's parents abandoned her by tooking her to an Anglican church. She grew up in the Anglican church orphan's home together with other orphans. Now..Suzy is working as a cooker and a cleaner in her own Anglican church in order to take care other orphans. But..Suzy is deaf. She cannot hear and speak. Suzy likes cats and dogs. She always goes and feed the cats and dogs where no one wants. Besides that..Suzy also always bring back home the cripple cats and dogs, and also abandoned puppies and kittens. During Sunday..Suzy will gives all the cats and dogs away to her church's members who wants them.

Lee Seung Gi: is a spoiled guy who come from a rich family. He always wasted his family's money on the things he likes. Seung Gi's family owns one of the biggest shipping company in South Korea. Many girls likes him because of his money. Seung Gi is a type of guy who will do anything in order to get what he wants. Seung Gi had in love with Suzy the orphan girl for almost 3 years and still in love with her because of her beauty. Seung Gi sometimes will come to Suzy's Anglican church to visit Suzy and sometimes he will brings many foods for the other orphans. 

Yuri: is a girl who is also come from a wealthy family. Yuri's family owns one of the biggest fashion design company in South Korea. Like the rest of the wealthy family kid..Yuri is also a spoiled girl who wants everything done according to the way she wants to be done. Those who stands in her way will feel the consequences. Yuri is deeply in love with Yoona. But all this time..Yoona just saw Yuri as her own sister. Sometimes..Yuri will go to Yoona's pet shop to pretend to be kind to all the animals in Yoona's pet shop.

Lee Min Ho: is one of Yoona's best friend. Min Ho is also come from a rich family. Min Ho's family own one of the biggest royal hotel in South Korea. But unlike any other rich kid..Min Ho is not spoiled. Like his best friend Yoona..Min Ho likes to use his money to help the poor and the needy. There is one time Min Ho wants to revenge on his girlfriend who dump him by making her jealous. So..Min Ho ask Yoona to pretend to be a girl and pretend to became his new girlfriend during Min Ho's girlfriend's party in order to make her ex girlfriend jealous. Min Ho now has a girlfriend who is from a poor background but she has a humble and a kind heart called Bora.

Jang Geung Suk: is also a pretty boy who also is one of Yoona's best friend. He always rivals with Yoona in order to see who is more pretty. Geung Suk also comes from a wealthy family. Geung Suk's family owns one of the largest art museum in both South Korea and Japan. Like Yoona and Min Ho, Geung Suk likes to help poor and needy people. Geung Suk now has a girlfriend. She is a short haired tomboy who knows how to play guitar called Shin Hye.

Lee Jong Suk: is also one of Yoona's best buddy. Jong Suk also come from a rich family. Jong Suk's family owns an international golf club in south Korea. Jong Suk is a shy and a quiet guy who seldom talk much. He also has a low self esteem. Yoona and the others always encourage him and help him. Yoona always see Jong Suk as his own younger brother. Jong Suk's girlfriend is Shin Hyo who is the tomboy Shin Hye's twin sister who look exactly like Shin Hye. 

Bora: is Lee Min Ho's y girlfriend who come from a poor background. But..Bora is a cheerful, humble and kind heart girl.

Park Shin Hye: is a tomboy who come from an average family. She has a short hair and she is more active. She is an expert guitarist. Shin Hye is Geung Suk's girlfriend.

Park Shin Hyo: is Park Shin Hye's twin sister who look exactly like her. Shin Hyo has a long hair and she is more quiet. Shin Hyo is Jong Suk's girlfriend.