I Love You Again and Again

•Not a translation.

When Saira Aoki was in middle school, everybody did not care about her and liked to tease her because she was a loner and fat. Therefore, lots of people made fun of her. Until she met Katashi Kobayashi in middle school. He is a senior by a year. He was the only one who treated her nicely. Saira fell in love with Katashi, as he treated her nicer than anyone in school.
Wherever Katashi goes he would attract everyone's attention because of his cool aura. He is handsome, from a wealthy family, smart, polite, good at sports, fashionable and cool. He is every girl's dream lover. Despite being so popular Katashi never had a girlfriend and did not accept any confession in middle school, because he wanted to focus on studying. Saira got motivated and decided to change herself, her way of living, and lose weight, in the hope that her life would get better and hope that Katashi would notice her.
Therefore, she aimed to admit to the same high school as Katashi.
Saira's parent is a very outstanding public figure, however, they are divorced.
Saira's mother had to go overseas to work, therefore, Saira's mother requested her friend to take care of Saira while she is gone but she was about to get married, so she (Saira's mother's friend) suggested her (Saira's mother), her friend from high school days who coincidentally, is Katashi's mother. At first, Saira did not know so she refused the idea to be in the care of others and she was used to be alone. However, her mother was worried and tried to persuade Saira. At last, Saira agreed and decided to go along with what her mother has planned for her. When Saira got to know that she would be living with Katashi she felt happy and excited. However, when Saira decided to confess her love to Katashi. Katashi brought back his girlfriend to introduce her to everyone?!!!